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There have been 2 items by z0r0 (Search limited from 30-05-2020)
Posted by z0r0 on 04-10-2012 - 00:03 in Ôn thi Đại học
chuyen ve xong nhan lien hop ban ak
Posted by z0r0 on 02-10-2012 - 22:01 in Ôn thi Đại học
$\quad \quad $ c) $\sqrt {2{x^2} + 23} = 4x - 2 + \sqrt {2{x^2} + 7}$$\quad \quad $ d) $\sqrt {{x^2} + 15} = 3x - 2 + \sqrt {{x^2} + 8}$