(-x-5)2As per formula(A-B)2=A2+B2+2AB∴(-x)2+(-5)2+2(-x)(-5)⇒x2+25+10x

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(-x-5)²=?

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x²+10x

x²+5+10x

x²+2+10x

x²+25+10x

answer is D.

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Detailed Solution

(-x-5)²

As per formula

(A $-$ B)²=A²+B²+2AB

$∴$ (-x)²+(-5)²+2(-x)(-5)

$\Rightarrow$ x²+25+10x

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