## Carissa15 one year ago Have an assignment due tonight and stuck on some questions. Please help? I am not sure of how to balance an equation that has a negative exponent?

1. BioHazard9064

I believe that you simplify it.

2. Carissa15

I have taken the second derivative, and now trying to find the zeroes of $2+2x^-3$

3. Carissa15

so obviously will then become$2x^-3=-2$

4. Carissa15

if I simplify the equation, then I get$\frac{ 2 }{ x^3 }+2$

5. Carissa15

but still not sure what to do to "get rid" of the exponent to leave x on it's own and find the value of x?

6. anonymous

hi

7. anonymous

8. welshfella

2 x^-3 = -2 divide both sides by 2 x^-3 = -1 1 / x^3 = -1 cross multiply - x^3 = 1 divide both sides by -1 x^3 = -1 x = -1

9. Carissa15

great thank you