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?

Question

biohazard9064 · Answer

I believe that you simplify it.

carissa15 · Answer

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

carissa15 · Answer

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

carissa15 · Answer

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

carissa15 · Answer

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?

anonymous · Answer

hi

anonymous · Answer

what is your question?

welshfella · Answer

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

carissa15 · Answer

great thank you