解式子:16(x+y)的四次方÷[-4(x+y)²]×3(x+y)

问题描述:

解式子:16(x+y)的四次方÷[-4(x+y)²]×3(x+y)

16(x+y)的四次方÷[-4(x+y)²]×3(x+y)=
16(x+y)^(4)*(1/4)(x+y)^(-2)*3(x+y)=
12*(x+y)^(4-2+1)=12(x+y)^3