fast as possible I need the correct answer.. this is really important ....
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Step-by-step explanation:
(a+b)² = a²+2ab+b²
(a+b)² = (a+b) (a+b)
= (a+b) (a) +(a+b) (b)
= a²+ab+ab+b²
= a²+2ab+b² proved
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