因式分解①2x^2-x-3 ②3x^2+5xy-2y^2

问题描述:

因式分解①2x^2-x-3 ②3x^2+5xy-2y^2

①2x^2-x-3
=(2x-3)(x+1)
②3x^2+5xy-2y^2
=(3x-y)(x+2y)谢谢懂了-皿-