Question

What multiplies to 288 and adds to -2?

Answer 1

First, let's list the factors of 288

Answer 2

2-144 times
3-96 times
4-72
6-48

Answer 3

8-36

Answer 4

9-32

Answer 5

12-24

Answer 6

16-18!

Answer 7

That's a good start, we also have
16 - 18

Answer 8

Okay, now, since this is a positive number, all of the factors can also be negative since negative times negative is positive

Answer 9

okay..

Answer 10

so, can any of those numbers add or subtract to be 2?

Answer 11

no.

Answer 12

Look closer

Answer 13

I don't think so.. -16-18 isn't, 16-18 doesn't multiply to 288

Answer 14

whoops, you're rigt

Answer 15

ok good I was like.. I'm confuzzled

Answer 16

Do you have an equation for this?

Answer 17

well I'm trying to factor 9x^2-2x+32

Answer 18

The RS table doesn't work

Answer 19

Where did 288 come from?

Answer 20

my teacher wants us to multiply 9 and 32

Answer 21

oh

Answer 22

to get number to multiply to and use the middle one for the number we add to

Answer 23

Putting it into a calculator, it is not factorable

Answer 24

well, it says the answer is (9x+16)(x-2)
not sure how they got that..

Answer 25

eh, I'll ask him. Thanks

Answer 26

:D

Answer 27

That isn't right, because for +32 on the end to be positive, both numbers in the factor have to be positive

Answer 28

hmm....
I'll ask him if the book got it wrong maybe. Ya, it doesn't make sense..

Answer 29

thank you