Please solve this question please help me

In all Question go on creating square of them on both sides and u will get to be knowing the ans
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Please solve krrke batayiye
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The 1st one

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Please find this answer

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Thanks sara solve krrke batayiye
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Which is tye book you are using?
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Use RD sharma instead
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Do u know all the algebric identities? If yes the solve these by using them.
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What are you looking for?