Posted by **L.P.** on Wednesday, November 18, 2009 at 9:12pm.

I am absolutly stumped at how to solve this. I know for squared functions you take the square root of both sides to solve for x but what about if one side is cubed. I know you would have to take the cubed root of the function but how do you do this on a calculator?

equation is: 3.9*10^-11 = 4*X^3

so I simplify and get:

9.75*10^-12 = x^3

but now how to solve on calculator?

- cubic function -
**bobpursley**, Wednesday, November 18, 2009 at 9:20pm
the x^{y} key allows cube roots.

( some calc have it as y^{x} key)

for instance, the cube root of 27

enter 27

press x^{y}

enter (1 divide 3 )

you should see 3, and some will require you to press enter.

- cubic function -
**L.P.**, Wednesday, November 18, 2009 at 9:25pm
okay sounds easy but I have a TI-84+ and I don't see that key.

also will this work for say x^5 or x^4?

If you don't have this key how would you solve it?

- cubic function -
**bobpursley**, Wednesday, November 18, 2009 at 9:44pm
yes, works for any root, or power.

If you don't have that key, you can do it with logs....

## Answer This Question

## Related Questions

- Pre-Calculus - (not sure how to type square root of) square root of 3x - 4 = (x-...
- Algebra - Solve 2+ the square root of 4-x=x what is your question? ok lets start...
- Pre Algebra - Please help me with some problems. Thank you! Solve the equation ...
- algrebra 2 - it is called completing the square here is the equation 4x^2-4x+1=9...
- math - x^2-9x-4=6 solve by completing the square show steps plz :D Add 4 to both...
- Pre-calc Solve logarithmic - ln sqrt(x-8)= 5 I would like help to solve this ...
- Algebra - Solve for s: h=(square root of 3)times s/2 and solve for h V= (pi)r ...
- math - Solve for the indicated variable A=1/2 bh Solve for b 2A = bh, so b = 2A/...
- math,correction - Is this correct: Problem #13 Solve: 9x^2 = 14 I did the ...
- math,algebra - is this correct? solve: 9x^2=14 this is what i did: i divide 9 by...

More Related Questions