Question

solve (a+b)the whole square-(a-b)the whole square

Answer 1

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Answer 2

Answer:

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

(a-b)^2=a^2-2ab+^2

=(a+b)^2-(a-b)^2

=(a^2+2ab+^2)-(a^2-2ab+^2)

=a^2+2ab+^2-a^2+2ab-^2

=4ab