Answers

2015-06-09T10:16:59+05:30
(a+b)² can be written as (a+b)(a+b)
(a+b)(a+b)= a²+ab+ab+b²
                 = a²+2ab+b²

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2015-06-09T12:01:11+05:30
(a+b)²=(a+b)(a+b)
or , = a²+ab+ab+b²
or, =a²+2ab+b² (verified).
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