1.3x^2+7X-62.3x^2-11x+63.2x^2-3x-204.2x^2-7x+65.2x^2-5xy+2y^2因式分解_数学解答

1.3x^2+7X-6
2.3x^2-11x+6
3.2x^2-3x-20
4.2x^2-7x+6
5.2x^2-5xy+2y^2
因式分解

人气：287 ℃　时间：2020-05-20 19:43:51

解答

1.3x^2+7X-6
=(3x-2)(x+3)
2.3x^2-11x+6
=(3x-2)(x-3)
3.2x^2-3x-20
=(2x+5)(x-4)
4.2x^2-7x+6
5.2x^2-5xy+2y^2
=(2x-y)(x-2y)