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)^21.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

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)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
希望对你有帮助

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)

.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)

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

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)

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)a^nb^2n
=a^(3n+2)*b^(2n+2)-a^(3n+2)b^2n

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)

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^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.-(a+3b)(a-5b)=-(a^2+3ab-5ab-5b^2)
=-a^2+2ab-5b^2
8.原式=4x^4y^28-4x^2y^30+4x^2y^4