1.(-x)^3(x^2)^5-(-x4)^2(-x^6)2.(x^m)^3(x^3)^m-2(x^2)^3m3.(3ab^2)^2=(-4ab^3)(-ab)4.(a^nb^3)^3a^2b^(2n-7)-[a^(n+1)]^2(ab^2)^n5先化简,后求值.其中x=-1,y=23x^3y^3(-3分之2x^2y)^2+(-3分之1x^2y)^39xy^26.(-3分之4x^2y^2)(-4分之3x^2+xy-5

来源：学生作业帮助网编辑：作业帮时间：2024/05/18 04:26:24

1.(-x)^3*(x^2)^5-(-x4)^2*(-x^6)2.(x^m)^3*(x^3)^m-2(x^2)^3m3.(3ab^2)^2=(-4ab^3)*(-ab)4.(a^nb^3)^3*a^2b^(2n-7)-[a^(n+1)]^2*(ab^2)^n5先化简,后求值.其中x=-1,y=23x^3y^3*(-3分之2x^2y)^2+(-3分之1x^2y)^3*9xy^26.(-3分之4x^2y^2)(-4分之3x^2+xy-5
1.(-x)^3*(x^2)^5-(-x4)^2*(-x^6)
2.(x^m)^3*(x^3)^m-2(x^2)^3m
3.(3ab^2)^2=(-4ab^3)*(-ab)
4.(a^nb^3)^3*a^2b^(2n-7)-[a^(n+1)]^2*(ab^2)^n
5先化简,后求值.其中x=-1,y=2
3x^3y^3*(-3分之2x^2y)^2+(-3分之1x^2y)^3*9xy^2
6.(-3分之4x^2y^2)(-4分之3x^2+xy-5分之2y^2)
7.2分之1(x^3-2x^2+3分之2)*(-6x)
8.4x^2y^28(x^2-y^2)+(-2xy^2)^2
1.先化简，后求值。其中x=-3,y=3分之1
3xy^2(-3分之1x^2y+4x^3y^2)-4x^2y(-4分之xy^2)*(-4xy)
2.解方程：6x(1-x)-4x(1-x)=16-2(x^2-2)
3.(y+3)(y-6)
4.(2x+1)(x-1)
5.(ab-2分之1)(ab-3分之1)
6.(x-1)(x-2)(x+3)
7.-(a+3b)(a-5b)

1.(-x)^3*(x^2)^5-(-x4)^2*(-x^6)2.(x^m)^3*(x^3)^m-2(x^2)^3m3.(3ab^2)^2=(-4ab^3)*(-ab)4.(a^nb^3)^3*a^2b^(2n-7)-[a^(n+1)]^2*(ab^2)^n5先化简,后求值.其中x=-1,y=23x^3y^3*(-3分之2x^2y)^2+(-3分之1x^2y)^3*9xy^26.(-3分之4x^2y^2)(-4分之3x^2+xy-5
1.原式=-x^3*x^10+x^8*x^6
=-x^13+x^14
=x^14-x^13
2.原式=x^3m*x^3m-2*x^6m
=x^6m-2x^6m
=-x^6m
3.原式=9a^2b^4+4a^2b^4
=13a^2b^4
4.原式=a^3n*b^9*a^2*b^2(2n-7)-a^(2n+2)a^nb^2n
=a^(3n+2)*b^(2n+2)-a^(3n+2)b^2n
5.原式=3x^3y^3*(4/9)*x^4y^2-(1/27)*x^6y^3*9xy^2
=(4/3)*x^7y^5-(1/27)*x^7y^5
=(35/27)*x^7*y^5
=(35/27)*(-1)^7*2^5
=-1120/27
6.原式=(-4/3)*x^2y^2*(-3/4)x^2+(-4/3)*x^2y^2*xy-(-4/3)*x^2y^2*(2/5)y^2)
=x^4y^2-(4/3)x^3y^3+(8/15)x^2y^4
7.原式＝(1/2)*x^3*(-6x) -(1/2)*2x^2*(-6x) +(1/2)*(2/3)*(-6x)
=-3x^4+6x^3-2x
8.原式=4x^4y^28-4x^2y^30+4x^2y^4

1.原式=-x^3*x^10+x^8*x^6
=-x^13+x^14
=x^14-x^13
2.原式=x^3m*x^3m-2*x^6m
=x^6m-2x^6m
=-x^6m
3.原式=9a^2b^4+4a^2b^4
=13a^2b^4
4.原式=a^3n*b^9*a^2*b^2(2n-7)-a^(2n+2)...

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为什么我算的答案不一样呢？你参考一下：
解1：＝－x^3*x^10 + 16x^2*x^6
= -x^13 +16x^8

2 = x^3m*x^3m-2*x^6m
= x^6m-2x^6m
= x^6m

3 9a^2b^4=4a^2b...

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为什么我算的答案不一样呢？你参考一下：
解1：＝－x^3*x^10 + 16x^2*x^6
= -x^13 +16x^8

2 = x^3m*x^3m-2*x^6m
= x^6m-2x^6m
= x^6m

3 9a^2b^4=4a^2b^4
= 5a^2b^4
解补充问题：
2 6X-6X^2-4X+4X^2=16-2X^2+4
2X-2X^2=16-2X^2+4
X=10
3 =Y^2-3Y-18
4 =2X^2-X-1

5 = A^2B^2 -5/6AB+ 1/6
6 =(X-3X+2)*(X+3)
=X^3-7X+6

7 =-(a^2-5ab+3ab-15b^2)

收起

.原式=-x^3*x^10+x^8*x^6
=-x^13+x^14
=x^14-x^13
2.原式=x^3m*x^3m-2*x^6m
=x^6m-2x^6m
=-x^6m
3.原式=9a^2b^4+4a^2b^4
=13a^2b^4
4.原式=a^3n*b^9*a^2*b^2(2n-7)-a^(2n+2)a^nb^2n...

全部展开

.原式=-x^3*x^10+x^8*x^6
=-x^13+x^14
=x^14-x^13
2.原式=x^3m*x^3m-2*x^6m
=x^6m-2x^6m
=-x^6m
3.原式=9a^2b^4+4a^2b^4
=13a^2b^4
4.原式=a^3n*b^9*a^2*b^2(2n-7)-a^(2n+2)a^nb^2n
=a^(3n+2)*b^(2n+2)-a^(3n+2)b^2n
5.原式=3x^3y^3*(4/9)*x^4y^2-(1/27)*x^6y^3*9xy^2
=(4/3)*x^7y^5-(1/27)*x^7y^5
=(35/27)*x^7*y^5
=(35/27)*(-1)^7*2^5
=-1120/27
6.原式=(-4/3)*x^2y^2*(-3/4)x^2+(-4/3)*x^2y^2*xy-(-4/3)*x^2y^2*(2/5)y^2)
=x^4y^2-(4/3)x^3y^3+(8/15)x^2y^4
7.原式＝(1/2)*x^3*(-6x) -(1/2)*2x^2*(-6x) +(1/2)*(2/3)*(-6x)
=-3x^4+6x^3-2x
8.原式=4x^4y^28-4x^2y^30+4x^2y^4
2 6X-6X^2-4X+4X^2=16-2X^2+4
2X-2X^2=16-2X^2+4
X=10
3 =Y^2-3Y-18
4 =2X^2-X-1
5 = A^2B^2 -5/6AB+ 1/6
6 =(X-3X+2)*(X+3)
=X^3-7X+6
7 =-(a^2-5ab+3ab-15b^2)

收起

1.原式=-x^3*x^10+x^8*x^6
=-x^13+x^14
=x^14-x^13
2.原式=x^3m*x^3m-2*x^6m
=x^6m-2x^6m
=-x^6m
3.原式=9a^2b^4+4a^2b^4
=13a^2b^4
4.原式=a^3n*b^9*a^2*b^2(2n-7)-a^(2n+2)a^nb^2n

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1.原式=-x^3*x^10+x^8*x^6
=-x^13+x^14
=x^14-x^13
2.原式=x^3m*x^3m-2*x^6m
=x^6m-2x^6m
=-x^6m
3.原式=9a^2b^4+4a^2b^4
=13a^2b^4
4.原式=a^3n*b^9*a^2*b^2(2n-7)-a^(2n+2)a^nb^2n
=a^(3n+2)*b^(2n+2)-a^(3n+2)b^2n
5.原式=3x^3y^3*(4/9)*x^4y^2-(1/27)*x^6y^3*9xy^2
=(4/3)*x^7y^5-(1/27)*x^7y^5
=(35/27)*x^7*y^5
=(35/27)*(-1)^7*2^5
=-1120/27
6.原式=(-4/3)*x^2y^2*(-3/4)x^2+(-4/3)*x^2y^2*xy-(-4/3)*x^2y^2*(2/5)y^2)
=x^4y^2-(4/3)x^3y^3+(8/15)x^2y^4
7.原式＝(1/2)*x^3*(-6x) -(1/2)*2x^2*(-6x) +(1/2)*(2/3)*(-6x)
=-3x^4+6x^3-2x
8.原式=4x^4y^28-4x^2y^30+4x^2y^4
解毕。
补充题：
1.3xy^2(-1/3*x^2y+4x^3y^2)-4x^2y(-1/4*xy^2)*(-4xy)
=-x^4y+12x^5y^4+x^3y^3*(-4xy)
=12x^2y^4-x^4y-12x^4y^4
=-x^4y
=-3^4*(1/3)
=-27
2.解方程：6x(1-x)-4x(1-x)=16-2(x^2-2)
6x-6x^2-4x+4x^2=16-2x^2+4
2x=20
x=10
3.(y+3)(y-6) =y^2+3y-6y-18
=y^2-3y-18
4.(2x+1)(x-1) =2x^2-2x+x-1
=2x^2-x-1
5.(ab-1/2)(ab-1/3) =a^2b^2-ab/2-ab/3+1/6
=a^2b^2-(5/6)*ab+1/6
6.(x-1)(x-2)(x+3) =(x^2-3x+2)(x+3)
=x^3-3x^2+2x+3x^2-9x+6
=x^3-7x+6
7.-(a+3b)(a-5b)=-(a^2+3ab-5ab-5b^2)
=-a^2+2ab-5b^2

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解1：＝－x^3*x^10 + 16x^2*x^6
= -x^13 +16x^8
2 = x^3m*x^3m-2*x^6m
= x^6m-2x^6m
= x^6m
3 9a^2b^4=4a^2b^4
= 5a^2b^4
解补充问题：
2 6X-6X^2-4X+4X^2=16-2X^2+4
2X-2X^2=1...

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解1：＝－x^3*x^10 + 16x^2*x^6
= -x^13 +16x^8
2 = x^3m*x^3m-2*x^6m
= x^6m-2x^6m
= x^6m
3 9a^2b^4=4a^2b^4
= 5a^2b^4
解补充问题：
2 6X-6X^2-4X+4X^2=16-2X^2+4
2X-2X^2=16-2X^2+4
X=10
3 =Y^2-3Y-18
4 =2X^2-X-1
5 = A^2B^2 -5/6AB+ 1/6
6 =(X-3X+2)*(X+3)
=X^3-7X+6
7 =-(a^2-5ab+3ab-15b^2)

收起

1.原式=-x^3*x^10+x^8*x^6
=-x^13+x^14
=x^14-x^13
2.原式=x^3m*x^3m-2*x^6m
=x^6m-2x^6m
=-x^6m
3.原式=9a^2b^4+4a^2b^4
=13a^2b^4
4.原式=a^3n*b^9*a^2*b^2(2n-7)-a^(2n+2)...

全部展开

收起

全部展开

1.(-x)^3*(x^2)^5-(-x4)^2*(-x^6)
2.(x^m)^3*(x^3)^m-2(x^2)^3m
3.(3ab^2)^2=(-4ab^3)*(-ab)
4.(a^nb^3)^3*a^2b^(2n-7)-[a^(n+1)]^2*(ab^2)^n
5先化简，后求值。其中x=-1,y=2
3x^3y^3*(-3分之2x^2y)^2+(-3分之1x^2y)^3*9xy^2
6.(-3分之4x^2y^2)(-4分之3x^2+xy-5分之2y^2)
7.2分之1(x^3-2x^2+3分之2)*(-6x)
8.4x^2y^28(x^2-y^2)+(-2xy^2)^2
问题补充：1.先化简，后求值。其中x=-3,y=3分之1
3xy^2(-3分之1x^2y+4x^3y^2)-4x^2y(-4分之xy^2)*(-4xy)
2.解方程：6x(1-x)-4x(1-x)=16-2(x^2-2)
3.(y+3)(y-6)
4.(2x+1)(x-1)
5.(ab-2分之1)(ab-3分之1)
6.(x-1)(x-2)(x+3)
7.-(a+3b)(a-5b)

收起

强

1.原式=-x^3*x^10+x^8*x^6
=-x^13+x^14
=x^14-x^13
2.原式=x^3m*x^3m-2*x^6m
=x^6m-2x^6m
=-x^6m
3.原式=9a^2b^4+4a^2b^4
=13a^2b^4
4.原式=a^3n*b^9*a^2*b^2(2n-7)-a^(2n+2)a^nb^2...

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收起

*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X || 填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x 已知x=2π+1.求(X-1)+(X-2)+(X-3)+(X-4)+(X-5)+(X-6)+(X-7)+(X-8)+(X-9)+(X-10) 十字相乘因式分解的几道计算题1.x^2+2x-82.x^2+3x-103.x^2-x-204.x^2+x-65.2x^2+5x-36.6x^2+4x-27.x^2-2x-38.x^2+6x+89.x^2-x-1210.x^2-7x+1011.6x^2+x+212.4x^2+4x-3 x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4 (x+3x+5x...+2009x)-(2x+4x+6x+...+2010x) 求一个数独答案X X X 9 X X X 8 2 X 6 3 X X 1 4 X 99 X 8 X X X X X XX X X 6 7 X 3 X XX 4 6 X 5 X 2 9 XX X 7 X 2 3 X X XX X X X X X 7 X 17 X 4 3 X X 6 2 X6 3 X X X 7 X X X x/x-3-5x/x^2-x-6计算 x^5-x^4+x^3-x^2+x-1 计算:x/x-2 - 5x/x²-x-6计算:x/x-3 - 5x/x²-x-6 1.x²-2x-3 2.x²-5x-6 3.x²-9x-10 4.x²-9x-10 5.x²-2x-8 6.x²+2x-8 7.x²-x-12 8.x²+x-12 9.x²+6x-16 10.x²-14x-32 11.x²+7x-18 1.(1/X-1 )-2=X^-3X/X^-12.（X/X+1)^+5(X/X+1)+6=03.（8(X^+2X)/X^-1）+ 3（X^-1)/X^+2x 难倒爱因斯坦的九宫格X 7 X | X 8 1 | X X X |X X X | X 4 X | 7 5 9 |X X 5 | 7 X 9 | X 1 4 |5 X X | X X 8 | 3 9 X |3 9 6 | 4 X 7 | X X 2 |X 8 7 | 9 X X | X X X |4 X X | 6 X 5 | X X X | X X 4 | X X 1 |2 X X | X X X | X X X | X 3 X | X X X |X 6 x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? 1.) 5/x-x+12-2x/2x-2x 2)y/2x-2y/3x 1.lim x->∞ （2x/x^2+1)*cosx 2..lim x->∞{ [(x^2-x)arctanx]/x^3-x-5}3..lim x->0 （e^x-e^-x-2x)/(x-sinx) 4..lim x->0 (sinx-x)/(x^3) 5..lim x->0 (x^2*tanx)/(x-tanx) 6..lim x->0 (1+3/x)^2x 7..lim x->0 (1+2x)^(3/sinx) 8.lim x->∞ (x/1+x)^(x-3) 9..li 如下9*9宫图如何填x x x 1 x x x 2 9x x 5 x x x x x 4x 6 8 x x x x x xx x x 7 x x 5 x xx 2 x x 6 x x 8 xx x 3 x x 9 x x xx x x x 5 x 1 6 x 4 x x x 3 x x x x 7 x x x x 2 x x x 1.(x^3-x^2-4x+1)/(x^2-3x+2)-(x^3-2x^2-9x+21)/（x^2-5x+6）+（x^2-3x+8）/（x^2-4x+3）2.{(x^2)/（x-y)}*{y/(x+y)}-{(x^4y)/(x^4-y^4)}÷{（x^2/x^2+y^2）^2}