分解因式:16-8(x-y)+(x-y)平方
问题描述:
分解因式:16-8(x-y)+(x-y)平方
答
16-8(x-y)+(x-y)²
=4²-2×4(x-y)+(x-y)²
=(4-x+y)²
=(x-y-4)²
答
原式=(x-y)²-8(x-y)+4²
=[(x-y)-4]²
=(x-y-4)²