-3/5x^2-5x+15x^2-10x^3

问题描述:

-3/5x^2-5x+15x^2-10x^3

-3/5x^2-5x+15x^2-10x^3
=72/5x^2-5x-10x^3
=-1/5x(50x^2-72x+25)
=-1/5x(50x^2-72x+25)