Thread: how do i solve this? factor?

1. how do i solve this? factor?

12X3+30X2=0

the small nubers 3, and 2 are to the third power and second power. i just dont know how to make the numbers go higher

2. Re: how do i solve this? factor?

The equation is:
$12x^3+30x^2=0$

You can put a factor $x^2$ outside therefore you get:
$x^2(12x+30)=0$

So now, what are the solutions?

3. Re: how do i solve this? factor?

Originally Posted by usmcadam
12X3+30X2=0

the small nubers 3, and 2 are to the third power and second power. i just dont know how to make the numbers go higher
Start with dividing both sides by 6: $2x^3 + 5x^2 =0$

You can then factor out x^2 (as the highest common factor) like Siron did: $x^2(2x+5) = 0$