1.

Factorize 5a2 - b2 -4ab + 7a - 7b.

Answer»
5a2-b2-4ab+7a-7b
=5a2-4ab-b2+7(a-b)
=5a2-5ab+ab-b2+7(a-b)
=5a(a-b)+b(a-b)+7(a-b)
=(a-b)(5a+b+7)
5a2 - b2 -4ab + 7a - 7b.Read more on Sarthaks.com - https://www.sarthaks.com/416432/factorize-5a-2-b-2-4ab-7a-7b
5a2 - b2 -4ab + 7a - 7bRead more on Sarthaks.com - https://www.sarthaks.com/416432/factorize-5a-2-b-2-4ab-7a-7b


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