T
thungan6a4


Cho $\dfrac{a^2}{a +b} + \dfrac{b^2}{b+c} + \dfrac{c^2}{c+a} = \dfrac{2014}{2015}$
Tính M = $\dfrac{a^2}{c+b} + \dfrac{b^2}{a+c} + \dfrac{c^2}{a+b}$
Tính M = $\dfrac{a^2}{c+b} + \dfrac{b^2}{a+c} + \dfrac{c^2}{a+b}$