What should be added to a2 + 2ab + b2 to obtain 3ab + b2 ?
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Step-by-step explanation:
Sum= 3a+b²
One no. = a²+2ab+b²
= a²+2ab+b² + x=3a+b²
x=3a+b²-a²+2ab+b²
x= 3a-a²-2ab (Answer )
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