Find the value of 9 a-10 b2A- 9 a2-180 a b-10 b2B- 81 a2-180 a b-100 b2C- 81 a2-90 a b-100 b2D- 81 a -180 ab -100 b

The correct option is B 81a2 + 180ab + 100b2By using square identity (a+b)2 = a2 +b2+2ab, we get (9a+10b)2 = 81a2 + 180ab + 100b2 ...

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Find the value of ( 9a + 10b)²

9a² + 180ab + 10b²

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81a² + 180ab + 100b²

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81a² + 90ab + 100b²

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81a + 180ab + 100b

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