Question

a^2 + b^2 + c^2 - 2bc​

Answer 1

Hello!!

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Answer 2

HeRe Is Your Ans ⤵

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$= > {a}^{2} + {b}^{2} + {c}^{2} - 2bc \\ = > {a}^{2} + ( {b}^{2} - {c}^{2} - 2bc ) \\ = > {a}^{2} + {(b - c)}^{2}$

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