Question

fill in the blanks
$(x + 2y) { }^{2} = x {}^{2} + fill \: in \: the \: blanck \: + 4y2$
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Answer 1

Step-by-step explanation:

$\implies \: {x}^{2} + 2 \times x \times 2y + {2y}^{2}$

$\implies \: \: {x}^{2} + 4xy + {2y}^{2}$

your answer is 4xy