Question

Factor completely..........
-18a^2 + 17a + 15

Answer 1

well look for factors of (-18*15) that add up to 17

Answer 2

i dont think this does factor

Answer 3

dont you have to do something with the first and last numbers to equal the middle one?

Answer 4

nevermind
-18*15 = -270
27*-10 = -270 AND 27 -10 = 17

Answer 5

yes

Answer 6

so how would you then rewrite that?

Answer 7

-18a^2 +27a -10a +15
factor by grouping
-9a(2a+3) -5(2a +3)

Answer 8

can you take it from there?

Answer 9

tytyty you are a life saver, i have to get up in 3 1/2 hours for work and I am still not done......lol

Answer 10

haha alright get busy..."5-hour energy" time

Answer 11

lol............. I only have 2 problems left and they are to simplify the radical expressionss.....lol

Answer 12

ty again