Question

Factor by grouping
x^3+3x^2-5x-15

Answer 1

i just did one like this

Answer 2

yeah i never figured out how to do it lol

Answer 3

x^2(x+3)-5(x+3)
(x+3)(x^2-5)

Answer 4

(x^3+3x^2)(-5x-15) ...see I am confused I dont understand how that works??

Answer 5

I could explain it to you, but you would need Skype

Answer 6

if i do foil i get this 2x^2-5x+3x^2-2 ???

Answer 7

5x^2-7??

Answer 8

You're foiling the wrong thing

Foil this:

(x+3)(x^2-5)

But you have to foil correctly

Answer 9

5x^2-7 is what i get

Answer 10

You did something wrong then

Answer 11

hmm idk i just did it again and got the same thing

Answer 12

Yeah, I question your foiling method

Answer 13

ok.. well can you help me lol

Answer 14

I already told you, I can help you using Skype

Answer 15

i dont have skype my comps crap

Answer 16

I'm sorry to hear that.

Answer 17

nvm i figured it out... i wasnt supposed to solve it just group it

Answer 18

I guess

Answer 19

It said to factor by grouping. That was the original problem.