Question

${(x + 2y)}^{2}$
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Answer 1

$\huge \boxed{answer}$

$formula \: used$

${x + y} {}^{2} = x {}^{2} + 2xy + y {}^{2}$

(x+2y)²

= x²+2(x)(2y)+(2y)²

= x²+4xy+4y²

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