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)

b^2(x-3)+(3-x)
=b^2(x-3)-(x-3)
=(b^2-1)(x-3)
=(b+1)(b-1)(x-3)