PLEASE HELP WORTH 15 PTS!!!!1
Antonia is factoring the polynomial, which has four terms. 7x3 β 21x2 + 5x β 15 7x2(x β 3) + 5(x β3) Which is the completely factored form of her polynomial?
7x2(x β 3)
12x2(x β 3)
(7x2 + 5) (x β 3)
(12x2 + 5) (x β 3)