x^2-9x+14因式分解

问题描述:

x^2-9x+14因式分解

(x-2)(x-7)

x^2-9x+14
=(x-7)(x-2)

=x^2-7x-2x+14
=x(x-7)-2(x-7)
=(x-7)(x-2)

(x-2)(x-7)