(3x+2)(3x-2)乘5x(x-1)-(2x-1)的平方
问题描述:
(3x+2)(3x-2)乘5x(x-1)-(2x-1)的平方
答
(3x+2)(3x-2)*5x(x-1)-(2x-1)^2
=9x^2*5x(x-1)-(2x-1)^2
=45x^4-45x^3-4x^2+4x-1