Question

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$(2x + 3 +{y}^{2}$
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Answer 1

$\huge \star \underline \pink{answer}$

(2x+3+y)²

= (2x)²+(3)²+(y)²+2(2x(3)+3(y)+y(2x))

= 4x²+9+y²+2(6x+3y+2xy)