1.6y^2-11y-102.5x^5-15x^3y-20xy^2_数学解答

1.6y^2-11y-10
2.5x^5-15x^3y-20xy^2

人气：463 ℃　时间：2020-04-18 00:27:28

解答

6y^2-11y-10
=(2y-5)(3y+2)
5x^5-15x^3y-20xy^2
=5x(x^4-3x^2y-4y^2)
=5x(x^2+y)(x^2-4y)