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数学因式分解.高手进
x²-2xy-8y²-x-14y-6
人气:181 ℃ 时间:2020-04-22 10:02:32
解答
x²-2xy-8y²-x-14y-6
=x^2-(2y+1)x-(8y^2+14y+6)
=x^2-(2y+1)x-(4y+3)(2y+2)
=(x-4y-3)(x(x+2y+2)
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