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সূত্রের সাহায্যে বর্গ নির্ণয় কর: $5x^2-y$

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সূত্রের সাহায্যে বর্গ বরা হলো :

$5x^2-y$ এর বর্গ

$=\left(5x^2-y\right)^2$

$=\left(5x^2\right)^2-2\cdot5x^2\cdot y+\left(y\right)^2$

$=25x^4-10x^2y+y^2$ [Answer]

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