Question

Find the factors of 2a^2 + a − 21.

(2a + 21)(a − 1)

(2a + 1)(a − 21)

(2a + 3)(a − 7)

(2a + 7)(a − 3)

Answer 1

What is the number when adding or subracting 1 and mutlipying 21?

Answer 2

You want to know whose product gives you -42 and sum gives you 1.

Answer 3

-21 not -42

Answer 4

My bad. I didn't look at the number right.

Answer 5

@jenniferjuice

Answer 6

:(

Answer 7

21 and 1?