因式分解 x方-20x-12000

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因式分解x方-20x-12000因式分解x方-20x-12000因式分解x方-20x-12000原式=x²-120x+100x-12000=x(x-120)+100(x-120)=(x-12

因式分解 x方-20x-12000
因式分解 x方-20x-12000

因式分解 x方-20x-12000
原式=x²-120x+100x-12000
=x(x-120)+100(x-120)
=(x-120)(x+100)