(x-1)(x-3)(x+2)(x+4)+24

问题描述:

(x-1)(x-3)(x+2)(x+4)+24
(x+y+z)(yz+zx+xy)-xyz
2x平方-3xy-2y平方-2x-11y-12
2x平方+xy-y平方+3x+1
3a平方-5ab+2b平方-a-b-10
按b的降幕排列,3a平方-5ab+2b平方-a-b-10
按a的降幕排列,a平方+2ab+b平方-x平方-6x-9

(x-1)(x-3)(x+2)(x+4)+24=48 - 14 x - 13 x^2 + 2 x^3 + x^4=(-2 + x) (3 + x) (-8 + x + x^2)(x+y+z)(yz+zx+xy)-xyz=x^2 y + x y^2 + x^2 z + 2 x y z + y^2 z + x z^2 + y z^2=(x + y) (x + z) (y + z)2x^2-3x y-2...