maths use the above formula to fill proper terms in the following boxes.
a (x+2y)2=x2+ box+4y2
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Answer:
box=4xy
Step-by-step explanation:
(x+2y)^2=x^2+ box+4y^2
=x^2+2(x)(2y)+(2y)^2
=x^2+4xy+4y^2
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