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AnilSinghBora
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Asked: 2021-08-07T22:08:31+05:30 In:

Factorize the following using appropriate identities: (i) 9×2+6xy+y2 Q.3(1)

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I want to know the best way for solving the problem of question no.3(1) of Polynomials chapter of exercise 2.5 of math of class 9th math, give me the simple way for solving this question Factorize the following using appropriate identities: (i) 9×2+6xy+y2

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    1. Guru

      9x2+6xy+y2 = (3x)2+(2×3x×y)+y2

      Using identity, x2+2xy+y2 = (x+y)2

      Here, x = 3x

      y = y

      9x2+6xy+y2 = (3x)2+(2×3x×y)+y2

      = (3x+y)2

      = (3x+y)(3x+y)

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