(x-1)(x-2)(x+3)怎么做
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(x-1)(x-2)(x+3)怎么做(x-1)(x-2)(x+3)怎么做(x-1)(x-2)(x+3)怎么做原式=（x²-3x+2)(x+3)=x^3-3x²+2x+3x²
(x-1)(x-2)(x+3)怎么做
(x-1)(x-2)(x+3)怎么做
(x-1)(x-2)(x+3)怎么做
原式=（x²-3x+2)(x+3)
=x^3-3x²+2x+3x²-9x+6
=x^3-7x+6
=(x^2-3x+2)(x+3)
=x^3+3x^2-3x^2-9x+2x+6
=x^3-7x+6
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