Question

Factor x^3 +27?

Answer 1

scary titan..
use formula a^3 + b^3 = (a + b)(a^2 – ab + b^2)

Answer 2

x^3+27 is the same as x^3 + 3^3, so:

(x+3)(x^2-3x+9)

Answer 3

Would it be (x^2+9)(x+3)

Answer 4

Okay

Answer 5

Never mind

Answer 6

I'm confused on how you got that answer.

Answer 7

There are some special formulas for factoring sums/differences of cubes.

\[\Large a^3 – b^3 = (a – b)(a^2 + ab + b^2)\]
\[\Large a^3 + b^3 = (a + b)(a^2 – ab + b^2) \]

Answer 8

So just figure out what your a is and your b is, and then plug & chug in the formula. Here, you have \(\Large x^3+27=x^3+3^3\)

Answer 9

Lol dude, I told you I was correct.

Answer 10

Factoring is my best skill. (x + 3)(x^2 - 3x + 9)

Answer 11

I'm not understanding how you are getting the answer though.

Answer 12

If you read what Debbie said, you can make 27 into 3^3.

Answer 13

Which does affect the factors of this equation to what it looks like.

Answer 14

(x^2+9)(x+3) = x^3 + 9 + 27. That's why that's NOT CORRECT.

Answer 15

With the answer you give me the (x's and 3x^2's cancel each other.

Answer 16

*9x

Answer 17

Do you even know how you factor? If you do, work out the answer you believe to be correct. Lol.

Answer 18

Lol, where did you get 9x?

Answer 19

I can factor really simple problems but I have never factored a problem with x^3.

Answer 20

x^3 = x * x * x

Answer 21

x^3-3x^2+9x+3x^2-9x+27

Answer 22

And the 27=3^3

Answer 23

Lol okay look, you factored wrong. and Why are you wasting time on factors that don't even equal your answer?

Answer 24

I'm just really confused.

Answer 25

4 people have given you the SAME answer, so you should just put that as your answer and watch it be correct. Lol.

Answer 26

I'm wanting to know how to do it though.

Answer 27

Lol. This is a essay question, aint it? Then your gonna copy and paste what I write as your answer.

Answer 28

With all the information already on this question, you can do it yourself.

Answer 29

It's not. I'm just wanting to understand how to solve it.

Answer 30

Read what everyone else put. Then you will UNDERSTAND! (:

Answer 31

mk

Answer 32

you have the formula a^3 + b^3 = (a + b)(a^2 – ab + b^2)
So plug in these values
a= x
b=3
then that is simply the answer