# Find the Inverse -2x^3+9 Interchange the variables.
Solve for .
Rewrite the equation as .
Subtract from both sides of the equation.
Divide each term by and simplify.
Divide each term in by .
Cancel the common factor of .
Cancel the common factor.
Divide by .
Simplify each term.
Move the negative in front of the fraction.
Dividing two negative values results in a positive value.
Take the cube root of both sides of the equation to eliminate the exponent on the left side.
Simplify .
Combine the numerators over the common denominator.
Rewrite as .
Multiply by .
Combine and simplify the denominator.
Multiply and .
Raise to the power of .
Use the power rule to combine exponents.
Rewrite as .
Use to rewrite as .
Apply the power rule and multiply exponents, .
Combine and .
Cancel the common factor of .
Cancel the common factor.
Divide by .
Evaluate the exponent.
Simplify the numerator.
Rewrite as .
Raise to the power of .
Simplify with factoring out.
Combine using the product rule for radicals.
Reorder factors in .
Solve for and replace with .
Replace the with to show the final answer.
Set up the composite result function.
Evaluate by substituting in the value of into .
Simplify the numerator.
Apply the distributive property.
Multiply by .
Multiply by .
Multiply by .
Rewrite as .
Pull terms out from under the radical, assuming real numbers.
Cancel the common factor of .
Cancel the common factor.
Divide by .
Since , is the inverse of .
Find the Inverse -2x^3+9