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x2–11x+24因式分解

x²-11x+24=(x-3)(x-8) 用十字相乘法,一步到位!

(x-3)(x-8)

题目有误,没有d (19x-31)(13x-17)-(13x-17)(11x-24) =(19x-31-11x+24)(13x-17) =(8x-7)(13x-17) =104x^2-136x-91x+119 =104x^2-227x+119 (ax+b)(8x+c) =8ax^2+acx+8bx+bc =8ax^2+(ac+8b)x+bc (19x-31)(13x-17)-(13x-17)(11x-24...

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