## anonymous 3 years ago 3x^4-75x^2=0

1. anonymous

$\left( x^4-25x^2 \right)=0$

2. anonymous

Where did the 3 go?

3. anonymous

$x^2\left( x^2-25 \right)=0$

4. anonymous

you can take it out as 3 is a common factor

5. anonymous

Oh okay I see

6. anonymous

okay,so you can get x=0,5 and -5

7. anonymous

Because 3 is a common factor?

8. anonymous

as 3 is a common factor,you can take it out. after that, we are getting $x^2\left( x^2-25 \right)=0$

9. anonymous

so,either x=0 or $x^2=25$

10. anonymous

Okay Thanks Im preparing for finals tomorrow morning

11. anonymous

okay,best of luck :)