Question

Factorize 5ab-7b²+5ac-7bc in the simplest form

Answer 1

5ab-7b*b+5ac-7bc
=5ab+5ac-7b*b-7bc
=5a(b+c)-7b(b+c)
=(b+c)(5a-7b)

Answer 2

5ab+5ac-7b*-7bc
5a(b+c)-7b(b+c)
5a-7b) (b+c)