x²-y²+y-1/4分解因式
问题描述:
x²-y²+y-1/4分解因式
答
x²-y²+y-1/4
=x^2-(y^2-y+1/4)
=x^2-(y-1/2)^2
=(x-y+1/2)(x+y-1/2)
PS:^2是平方的意思,输入法不好,请见谅.