(x²+3x+2)(4x²+8x+3)-90怎么因式分解
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/26 04:24:20
![(x²+3x+2)(4x²+8x+3)-90怎么因式分解](/uploads/image/z/1239537-57-7.jpg?t=%28x%26sup2%3B%2B3x%2B2%29%284x%26sup2%3B%2B8x%2B3%29-90%E6%80%8E%E4%B9%88%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3)
(x²+3x+2)(4x²+8x+3)-90怎么因式分解
(x²+3x+2)(4x²+8x+3)-90怎么因式分解
(x²+3x+2)(4x²+8x+3)-90怎么因式分解
(x^2+3x+2)(4x^2+8x+3)-90
=(x+2)(x+1)(2x+1)(2x+3)-90
=(x+2)(2x+1)(x+1)(2x+3)-90
=(2x^2+5x+2)(2x^2+5x+3)-90
=(2x^2+5x)^2+5(2x^2+5x)+6-90
=(2x^2+5x)^2+5(2x^2+5x)-84
=(2x^2+5x-7)(2x^2+5x+12)
=(2x+7)(x-1)(2x^2+5x+12)
(x+1)(x+2)(x+1\2)(x+3/2)-90好像只能分到这了