初一因式分解练习题b^2(x-3)+(3-x)
问题描述:
初一因式分解练习题b^2(x-3)+(3-x)
答
b^2(x-3)+(3-x)
=b^2(x-3)-(x-3)
=(b^2-1)(x-3)
=(b+1)(b-1)(x-3)