xy(x y)的平方 4x的三次方y的三次方-搜答案-神马作文网

原式=2xy(x²+2xy+y²)=2xy(x+y)²=2*2*4²=64

原式=4x²y³÷(-1/2xy)²=4x²y³÷[(-1/2)²x²y²]=4x²y³÷[(1/4

(-2/3x³y+4x²y²-1/2xy³)/(-xy/4)=-2/3x³y/(-xy/4)+4x²y²/(-xy/4)-1/2x

4x的三次方y+4x的平方y的平方+xy的三次方=xy（4x^2+4xy+y^2）=xy(2x+y)^2肯定对望采纳

4x³-4x²y+xy²=x(4x²-4xy+y²)=x(2x-y)²(x²+9)²-36x²=(x²

10分给你把答案做出来就得10分钟

4xy的平方-4x的平方y-y的三次方=y(4xy-4x^2-y^2)=-y(4x^2-4xy+y^2)=-y(2x-y)^2

-4x的7次方y的16次方2-3/2x的9次方y的9次方1.58×10的9次方

4x³-xy²=x(4x²-y²）=x(2x-y)(2x+y)

x²y³-2x(4xy³)=x²y³-2x²y³=-x²y³

=xy(4x²+4xy+y²)=xy(2x+y)²

9x的三次方-25xy的平方=x(9x²-25y²)=x(3x+5y)(3x-5y)

xy(x+y)²-4x³y³=xy[(x+y)²-4x²y²]=xy(x+y+2xy)(x+y-2xy)

(x-y)^4=x^4+y^4+6x^2y^2-4x^3y-4y^3xx^4-2x^2y^2-4xy^3+4x^3+y^2（4x^2+3/4y^2)=1/4[(4x^4+4y^4+24x^2y^2-1

-4xy的平方+4x的平方y+y的三次方=y(4x²-4xy＋y²)=y(2x-y)²

（x^2+xy+y^2）^2-4xy（x^2+y^2）=(x^2+y^2)^2+2xy(x^2+y^2)+x^2y^2-4xy(x^2+y^2)=(x^2+y^2)^2-2xy(x^2+y^2)+x^

4x³-xy²=x(4x²-y²)=x[(2x)²-y²]=x(2x+y)(2x-y)

原式=-x³y^6+x²y^4+xy²=-(xy²)³+(xy²)²+(xy²)=-2³+2²+2=

x³-y³-x²y+xy²=(x³-y³)-(x²y-xy²)=(x-y)(x²+xy+y²)-xy

原式=(-4)*(-2)*(x*x²)y³=8x³y³