Answer :

philibaker

Answer:

a^2 + b^2

Step-by-step explanation:

multiply inside the parenthesis

Answer:

=a²+b²+2ab

Step-by-step explanation:

=(a+b)(a+b)

=(a²+ab)+(ba+b²)

=a²+ab+ab+b²

=a²+b²+2ab

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