4(x-y)的立方×〔-1/2(y-x)的立方〕的平方怎样算
问题描述：
4(x-y)的立方×〔-1/2(y-x)的立方〕的平方怎样算
答
原式=4(x-y)^3×[-1/2(y-x)^3]^2
=4(x-y)^3×1/4(y-x)^6
=(x-y)^3/(x-y)^6
=1/(x-y)^2
答
4(x-y)的立方×〔-1/2(y-x)的立方〕
=4(x-y)的立方×〔1/2(x-y)的立方〕
=(x-y)的立方×(4*1/2)
=2(x-y)的立方
=2x的立方-6x方y+6xy方-2y的立方
答
4(x-y)^3×[-1/2(y-x)^3]^2
=4(x-y)^3×1/4(y-x)^6
=(x-y)^3/(x-y)^6
=1/(x-y)^2
答
{4(x-y)^3*[-1/2(y-x)^3]}2
={4(x-y)^3*[1/2(x-y)^3]}2
=2^2
=4