Madhyamik Question Paper Solution of Year 2020 Question No: 8. (i)

\(x:a=y:b=z:c\) হলে দেখাও \(\frac{x^3}{a^3}+\frac{y^3}{b^3}+\frac{z^3}{c^3}=\frac{3xyz}{abc}\)

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