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Factorise 25a² - 4b² + 28bc …

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Factorise 25a² - 4b² + 28bc -49c²

Posted by Alan Binnet 3 years, 9 months ago

CBSE > Class 08 > Mathematics

1 answers

Harini Rk 3 years, 8 months ago

5a²-[(2b) ²+2*2b*7c-(7c) ² (a+b) ²=a²+b²+2ab 5a²-(2b+7c) ² a²-b²=(a-b) (a+b) {(5a) -(2b+7c) {(5a) +(2b+7c) } (5a-2b-7c) (5a+2b+7c)

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