Question

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

=>(x+2y)²

We know that (a+b)²=a²+2ab+b²

=>(x)²+2×x×2y×(2y)²

=>x²+4xy+4y²

Answer 2

Answer:

x^2+4y^2+4xy

Step-by-step explanation:

apply (a+b)^2 formula =a^2+b^2+2ab