(x^2+5x+3)*(x^2+5x-2)-6
问题描述:
(x^2+5x+3)*(x^2+5x-2)-6
答
(x^2+5x+3)*(x^2+5x-2)-6
=(x²+5x)²+(x²+5x)-6-6
=(x²+5x)²+(x²+5x)-12
=(x²+5x+4)(x²+5x-3)
=(x+1)(x+4)(x²+5x-3)