2x^3-13x^2-7怎么因式分解掉?求助

2025-03-07 07:16:08
推荐回答(2个)
回答1:

-13x^2=-12x^2-x^2
则原式=2x^3-12x^2-x^2+3
=x^2(2x-1)-3(2x+1)(2x-1)

回答2:

2x(x^2-3)^2-(x-9)^2+88