(x-2)(x平方-6x-9)=x(x-5)(x-3)

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(x-2)(x平方-6x-9)=x(x-5)(x-3)(x-2)(x平方-6x-9)=x(x-5)(x-3)(x-2)(x平方-6x-9)=x(x-5)(x-3)(x-2)(x平方-6x-9)=x(x

(x-2)(x平方-6x-9)=x(x-5)(x-3)
(x-2)(x平方-6x-9)=x(x-5)(x-3)

(x-2)(x平方-6x-9)=x(x-5)(x-3)
(x-2)(x平方-6x-9)=x(x-5)(x-3)
x³-8x²+3x+18=x³-8x²+15x
3x+18=15x
12x=18
x=3/2

(x-2)(x^2-6x-9)=x(x-5)(x-3) x^3-2x^2-6x^2+12x-9x+18=x^3-8x^2+15x 12x=18 x=3/2

(x-2)(x平方-6x-9)=x(x-5)(x-3) x³-8x²+3x+18=x³-8x²+15x 3x+18=15x 12x=18 x=3/2 (x-2)(x^2-6x-9)=x(x-5)(x-3) x^3-2x^2-6x^2+12x-9x+18=x^3-8x^2+15x 12x=18 x=3/2