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Expand: (7x+2y)2 |
Answer» Given (7x+2y)2 According to the identity (a + b)2=a2+2ab+b2 we have to expand the given expression, (7x+2y)2= (7x)2+2 (7x)(2y)+(2y)2 (7x+2y)2= 49x2+28xy+4y2 |
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