Question

Factor completely.



15a² + 55a - 20


A. 5(3a² + 11a - 4)
B. 5(a + 4)(3a - 1)
C. (5a + 2)(3a - 10)
D. (5a + 4)(3a - 5)

Answer 1

What do you think would be the first step to simplify 15a^2+55a-20?

Answer 2

15a^2

Answer 3

why?

Answer 4

because u have to mulitiply and if i'm correct u have to mulitiply before you add or subtract

Answer 5

mhmm not exactly.

Answer 6

\[5(3a^2+11a-4)\]

Answer 7

ok

Answer 8

can you keep simplifying it?

Answer 9

yes i'm doing that

Answer 10

You could also try by solving each one and see if you get the original equation.

Answer 11

is that right

Answer 12

no

Answer 13

where did you get 45a?

Answer 14

ok srry hold up ok