9+24(x-y)+16(x-y)=?分解因式
问题描述:
9+24(x-y)+16(x-y)=?分解因式
16(x-y)右上角有个²
答
原式=[4(x-y)]^2+2*4(x-y)*3+3^2
=[4(x-y)+3]^2
=(4x-4y+3)^2