7.1 , 7.2

7.1
Ex 1: Factor out greatest common factor.
1. 10x - 30
= 10(x+3)
Ex 2: Factor by grouping.
1. 2k + 2h + jk + jh
=2(k + h) j(k+h)
= (k + h)(2 + j)
7.2
EX 1: Factor the trinomial.
1. y^2 + 7y -30
= (y - 3) (y + 10)
EX 2:
1. 7p^2 +15pq +2q^2)
= (7p + ?) (p + ?)
= (7p + q) (p + 2q)