Question

factor 3a^2-27a-210

Answer 1

Hi! Do you just want the answer, or do you want me to help you go through it and explain?

Answer 2

well i factored out the 3 to begin with and 3(a^2-9a-70) but I can't figure out what's next.

Answer 3

Okay. So since it's -70 we want to find factors of 70 that have a difference of 9. Does that make sense now?

Answer 4

@lgh875? Do you get it?

Answer 5

Yes and I can't figure out what two multiply to get -70 and add to get -9.

Answer 6

Not add. Subtract.

Answer 7

even subtract. I have 1,70-2,35-5,12-7,10. That's all the factors of 70 i see.

Answer 8

Not 5 and 12. That makes 60.

Answer 9

ok, now i see! I keep making these stupid little mistakes that are going to cost me!! Thank you for your help! 3(a+5)(a-14)

Answer 10

No problem! Glad to help. And don't be down on yourself for those things - it happens to everyone.

Answer 11

Thanks again! I'm sure I will be back on here!

Answer 12

We'll be glad to see you back.