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## Answers

=>(a+b) + (a+b) + (a+b)² {here (a+b)² = (a+b)(a+b)}

=>a + a + b + b + a² + b² + 2ab {(a+b)² = a²+b²+2ab}

=>a² + b² + 2a + 2b + 2ab

__=> a² + b² + 2(a + b + ab) ANS.__
[a+b] + [a²+2ab+b²] +[a+b]

a+b+a²+2ab+b²+a+b

2a+2b+2ab+a²+b²

2[a+b]+[a+b]²

[a+b][2+a+b]

a+b+a²+2ab+b²+a+b

2a+2b+2ab+a²+b²

2[a+b]+[a+b]²

[a+b][2+a+b]