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Phan Thanh Tinh Coordinator

15/07/2017 at 23:39
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Prove that if \(\dfrac{1}{x}-\dfrac{1}{y}-\dfrac{1}{z}=1\) and x = y + z,then \(\dfrac{1}{x^2}+\dfrac{1}{y^2}+\dfrac{1}{z^2}=1\)


Algebraic fraction


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    Phan Thanh Tinh Coordinator 15/07/2017 at 23:42

    Given a + b + c = 3.Simply the fraction :\(\dfrac{a^3+b^3+c^3-3abc}{\left(a-b\right)^3+\left(b-c\right)^3+\left(c-a\right)^3}\)


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