Factorise : 63a^2-112b^2

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Factorise : 63a^2-112b^2

Posted by Prakash Korhari 6 years, 9 months ago

CBSE > Class 11 > Mathematics

1 answers

Saransh Sharma 6 years, 9 months ago

=7(9a^2-16b^2) taking out 7 common =7[(3a)^2-(4b)^2] 3a whole sqaure minus 4b whole sqaure =7[(3a-4b)(3a+4b)] using a^2 - b^2 =(a-b)(a+b) identity

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