2x²-3x-1因式分解和-2x²+5xy+2y²因式分解

2x²-3x-1因式分解和-2x²+5xy+2y²因式分解
2x²-3x-1因式分解和-2x²+5xy+2y²因式分解

2x²-3x-1因式分解和-2x²+5xy+2y²因式分解
(1)2x^2-3x+1
=(2x-1)(x-1)
(2)-2x²+5xy+2y²
=-(2x-y)(x-2y)
这还是挺容易的啊!

蛋疼