Math, asked by kaustubh8979, 1 year ago

solve plzz question no 22

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Answered by kalyaniprasad8

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49 a²-25 b²+ 20 bc- 4 c²

=49 a²- (25 b² - 2*5 b* 2 c + 4c²)

=(7a)²-(5b-2c)²

=(7a-5b+2c)(7a+5b-2c)

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