(x-1)(x-3)(x+2)(x+4)+24(x+y+z)(yz+zx+xy)-xyz2x平方-3xy-2y平方-2x-11y-122x平方+xy-y平方+3x+13a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
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![(x-1)(x-3)(x+2)(x+4)+24(x+y+z)(yz+zx+xy)-xyz2x平方-3xy-2y平方-2x-11y-122x平方+xy-y平方+3x+13a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](/uploads/image/z/14344424-8-4.jpg?t=%28x-1%29%28x-3%29%28x%2B2%29%28x%2B4%29%2B24%28x%2By%2Bz%29%28yz%2Bzx%2Bxy%29-xyz2x%E5%B9%B3%E6%96%B9-3xy-2y%E5%B9%B3%E6%96%B9-2x-11y-122x%E5%B9%B3%E6%96%B9%2Bxy-y%E5%B9%B3%E6%96%B9%2B3x%2B13a%E5%B9%B3%E6%96%B9-5ab%2B2b%E5%B9%B3%E6%96%B9-a-b-10+%E6%8C%89b%E7%9A%84%E9%99%8D%E5%B9%95%E6%8E%92%E5%88%97%2C3a%E5%B9%B3%E6%96%B9-5ab%2B2b%E5%B9%B3%E6%96%B9-a-b-10%E6%8C%89a%E7%9A%84%E9%99%8D%E5%B9%95%E6%8E%92%E5%88%97%2Ca%E5%B9%B3%E6%96%B9%2B2ab%2Bb%E5%B9%B3%E6%96%B9-x%E5%B9%B3%E6%96%B9-6x-9)
(x-1)(x-3)(x+2)(x+4)+24(x+y+z)(yz+zx+xy)-xyz2x平方-3xy-2y平方-2x-11y-122x平方+xy-y平方+3x+13a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
(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(x+y+z)(yz+zx+xy)-xyz2x平方-3xy-2y平方-2x-11y-122x平方+xy-y平方+3x+13a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-2y^2-2x-11y-12
=(-3 + x - 2 y) (4 + 2 x + y)
2x^2+x y-y^2+3x+1
=(1 + 2 x - y) (1 + x + y)
3a^2-5a b+2b^2-a-b-10
=(5 + 3 a - 2 b) (-2 + a - b)
a^2+2a b+b^2-x^2-6x-9
=(-3 + a + b - x) (3 + a + b + x)