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giapthu190
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Tìm x biết :
(2013-x)^2+(2013-x)(x-2014)+(x-2014)^2/ (2013-x)^2-(2013-x)(x-2014)+(x-2014)^2
Chú ý tiêu đề
(2013-x)^2+(2013-x)(x-2014)+(x-2014)^2/ (2013-x)^2-(2013-x)(x-2014)+(x-2014)^2
Chú ý tiêu đề
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