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数学
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2x²-7x+3 、 6x²-7x-5、5x²+6xy-8y²、2X²+15x+7、6y²-11y-10化简为平方差
人气：294 ℃ 时间：2019-12-13 01:01:34
解答
(2x-1)(x-3)
(2x+1)(3x-5)
(5x-4y)(x+2y)
(2x+1)(x+7)
(2y-5)(3y+2)
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（1）2x²-7x+3= （2）6x²-7x-5 （3）5x²+6xy-8y²
（4x²y²）²÷8y²-（6x^6y^4-2x^2y^2）
x²-xy-6y²-2x+11y-3;2x²-xy-6y²+3x+8y-2; 3x²+10xy-8y²-11x+26y-20;
x²-xy-6y²-2x+11y-3; 2x²-xy-6y²+3x+8y-2; 3x²+10xy-8y²-11x+26y-20; 要过
6y²-11y-10化简为平方差
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化简[(ab+1)(ab-1)-2a^2b^2+1]/ab
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