多项式因式分解:1,(x+y)²-8(x+y-z) 2,0.333²×4-1.222²×9

问题描述:

多项式因式分解:1,(x+y)²-8(x+y-z) 2,0.333²×4-1.222²×9

1、=(x+y)²-8(x+y)+8z
=(x+y)(x+y-8)+8z
2、=0.333²×2²-1.222²×3²
=0.666²-3.666²
=(0.666+3.666)(0.666-3.666)