(x+2)^2-(x-1)(x-2)因式分解
问题描述:
(x+2)^2-(x-1)(x-2)因式分解
答
(x+2)²-(x-1)(x-2)
=x²+4x+4-x²+2x+x-2
=7x-2
答
(x+2)^2-(x-1)(x-2)
=x²+4x+4-(x²-3x+2)
=x²+4x+4-x²+3x-2
=7x+2