# Math Help - factorising cubic

1. ## factorising cubic

16x^2+6x^2+28x=0

How would you factorise this? ]CHeers

2. Originally Posted by Haris
16x^2+6x^2+28x=0

How would you factorise this? ]CHeers
Hi Haris,

Are you sure you copied this correctly?

You have $16x^2+6x^2+28x$

3. Aye thats it...

4. I think the reason why he is questioning whether or not you copied it correctly is because the exponents of the first two terms is the same. If thats the case, you can just combine the first two terms. It is usually not that easy =P

5. Hello Haris
Originally Posted by Haris
16x^2+6x^2+28x=0

How would you factorise this? ]CHeers
Judging from the title of your post, I suspect you might mean:
$16x^3+6x^2+28x = 0$
If so, take out a factor $2x$:
$2x(8x^2+3x+14)=0$
That's all the factorising that's possible. And the only real solution to the equation is $x = 0$.