Question

Factor completely
3x^3 + 9x^2 + x + 3

Answer 1

Can u factorise this?
3x^3 + 9x^2 @davidkoveleski

Answer 2

would it be 12x^5?

Answer 3

@ajprincess

Answer 4

Nope:(
\(3x^3=3*x*x*x=3x^2*x\)
\(9x^2=3*3*x*x=3x^2*3\)
Nw can u pls tell me what is common to both \(3x^3\) and \(9x^2\)?

Answer 5

3 and x?

Answer 6

@ajprincess

Answer 7

Well actually it is \(3x^2\).
\(3x^3=3x^2*x\) and \(9x^2=3x^2*3\).
getting it @davidkoveleski

Answer 8

So how should I answer @ajprincess

Answer 9

When we take the common one out what remains is x and 3.
So
\(3x^3+9x^2=3x^2(x+3)\)

Answer 10

x+1=1(x+3)
can u factorise
\(3x^2(x+3)+1(x+3)\)?

Answer 11

u can assume x+3 as y to make factorising simpler.
So tell me vat u get when u factorise \(3x^2y+y\). @davidkoveleski

Answer 12

3x^2y^2 @ajprincess

Answer 13

hw did u get it?

Answer 14

Just put the y's together?

Answer 15

@ajprincess

Answer 16

it can't be done that way.. if it is to do be done there should be * sign between 3x^2y and y. but here u have + sign.