Algebra Examples

Solve by Factoring x^(3/2)=8
Step 1
Subtract from both sides of the equation.
Step 2
Rewrite as .
Step 3
Rewrite as .
Step 4
Since both terms are perfect cubes, factor using the difference of cubes formula, where and .
Step 5
Simplify.
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Step 5.1
Multiply the exponents in .
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Step 5.1.1
Apply the power rule and multiply exponents, .
Step 5.1.2
Cancel the common factor of .
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Step 5.1.2.1
Cancel the common factor.
Step 5.1.2.2
Rewrite the expression.
Step 5.2
Simplify.
Step 5.3
Move to the left of .
Step 5.4
Raise to the power of .
Step 6
If any individual factor on the left side of the equation is equal to , the entire expression will be equal to .
Step 7
Set equal to and solve for .
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Step 7.1
Set equal to .
Step 7.2
Solve for .
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Step 7.2.1
Add to both sides of the equation.
Step 7.2.2
Raise each side of the equation to the power of to eliminate the fractional exponent on the left side.
Step 7.2.3
Simplify the exponent.
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Step 7.2.3.1
Simplify the left side.
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Step 7.2.3.1.1
Simplify .
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Step 7.2.3.1.1.1
Multiply the exponents in .
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Step 7.2.3.1.1.1.1
Apply the power rule and multiply exponents, .
Step 7.2.3.1.1.1.2
Cancel the common factor of .
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Step 7.2.3.1.1.1.2.1
Cancel the common factor.
Step 7.2.3.1.1.1.2.2
Rewrite the expression.
Step 7.2.3.1.1.2
Simplify.
Step 7.2.3.2
Simplify the right side.
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Step 7.2.3.2.1
Raise to the power of .
Step 8
Set equal to and solve for .
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Step 8.1
Set equal to .
Step 8.2
Solve for .
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Step 8.2.1
Find a common factor that is present in each term.
Step 8.2.2
Substitute for .
Step 8.2.3
Solve for .
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Step 8.2.3.1
Multiply by .
Step 8.2.3.2
Use the quadratic formula to find the solutions.
Step 8.2.3.3
Substitute the values , , and into the quadratic formula and solve for .
Step 8.2.3.4
Simplify.
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Step 8.2.3.4.1
Simplify the numerator.
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Step 8.2.3.4.1.1
Raise to the power of .
Step 8.2.3.4.1.2
Multiply .
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Step 8.2.3.4.1.2.1
Multiply by .
Step 8.2.3.4.1.2.2
Multiply by .
Step 8.2.3.4.1.3
Subtract from .
Step 8.2.3.4.1.4
Rewrite as .
Step 8.2.3.4.1.5
Rewrite as .
Step 8.2.3.4.1.6
Rewrite as .
Step 8.2.3.4.1.7
Rewrite as .
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Step 8.2.3.4.1.7.1
Factor out of .
Step 8.2.3.4.1.7.2
Rewrite as .
Step 8.2.3.4.1.8
Pull terms out from under the radical.
Step 8.2.3.4.1.9
Move to the left of .
Step 8.2.3.4.2
Multiply by .
Step 8.2.3.4.3
Simplify .
Step 8.2.3.5
Simplify the expression to solve for the portion of the .
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Step 8.2.3.5.1
Simplify the numerator.
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Step 8.2.3.5.1.1
Raise to the power of .
Step 8.2.3.5.1.2
Multiply .
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Step 8.2.3.5.1.2.1
Multiply by .
Step 8.2.3.5.1.2.2
Multiply by .
Step 8.2.3.5.1.3
Subtract from .
Step 8.2.3.5.1.4
Rewrite as .
Step 8.2.3.5.1.5
Rewrite as .
Step 8.2.3.5.1.6
Rewrite as .
Step 8.2.3.5.1.7
Rewrite as .
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Step 8.2.3.5.1.7.1
Factor out of .
Step 8.2.3.5.1.7.2
Rewrite as .
Step 8.2.3.5.1.8
Pull terms out from under the radical.
Step 8.2.3.5.1.9
Move to the left of .
Step 8.2.3.5.2
Multiply by .
Step 8.2.3.5.3
Simplify .
Step 8.2.3.5.4
Change the to .
Step 8.2.3.6
Simplify the expression to solve for the portion of the .
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Step 8.2.3.6.1
Simplify the numerator.
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Step 8.2.3.6.1.1
Raise to the power of .
Step 8.2.3.6.1.2
Multiply .
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Step 8.2.3.6.1.2.1
Multiply by .
Step 8.2.3.6.1.2.2
Multiply by .
Step 8.2.3.6.1.3
Subtract from .
Step 8.2.3.6.1.4
Rewrite as .
Step 8.2.3.6.1.5
Rewrite as .
Step 8.2.3.6.1.6
Rewrite as .
Step 8.2.3.6.1.7
Rewrite as .
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Step 8.2.3.6.1.7.1
Factor out of .
Step 8.2.3.6.1.7.2
Rewrite as .
Step 8.2.3.6.1.8
Pull terms out from under the radical.
Step 8.2.3.6.1.9
Move to the left of .
Step 8.2.3.6.2
Multiply by .
Step 8.2.3.6.3
Simplify .
Step 8.2.3.6.4
Change the to .
Step 8.2.3.7
The final answer is the combination of both solutions.
Step 8.2.4
Substitute for .
Step 8.2.5
Solve for for .
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Step 8.2.5.1
Raise each side of the equation to the power of to eliminate the fractional exponent on the left side.
Step 8.2.5.2
Simplify the exponent.
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Step 8.2.5.2.1
Simplify the left side.
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Step 8.2.5.2.1.1
Simplify .
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Step 8.2.5.2.1.1.1
Multiply the exponents in .
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Step 8.2.5.2.1.1.1.1
Apply the power rule and multiply exponents, .
Step 8.2.5.2.1.1.1.2
Cancel the common factor of .
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Step 8.2.5.2.1.1.1.2.1
Cancel the common factor.
Step 8.2.5.2.1.1.1.2.2
Rewrite the expression.
Step 8.2.5.2.1.1.2
Simplify.
Step 8.2.5.2.2
Simplify the right side.
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Step 8.2.5.2.2.1
Simplify .
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Step 8.2.5.2.2.1.1
Rewrite as .
Step 8.2.5.2.2.1.2
Expand using the FOIL Method.
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Step 8.2.5.2.2.1.2.1
Apply the distributive property.
Step 8.2.5.2.2.1.2.2
Apply the distributive property.
Step 8.2.5.2.2.1.2.3
Apply the distributive property.
Step 8.2.5.2.2.1.3
Simplify and combine like terms.
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Step 8.2.5.2.2.1.3.1
Simplify each term.
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Step 8.2.5.2.2.1.3.1.1
Multiply by .
Step 8.2.5.2.2.1.3.1.2
Rewrite as .
Step 8.2.5.2.2.1.3.1.3
Move to the left of .
Step 8.2.5.2.2.1.3.1.4
Rewrite as .
Step 8.2.5.2.2.1.3.1.5
Multiply .
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Step 8.2.5.2.2.1.3.1.5.1
Raise to the power of .
Step 8.2.5.2.2.1.3.1.5.2
Raise to the power of .
Step 8.2.5.2.2.1.3.1.5.3
Use the power rule to combine exponents.
Step 8.2.5.2.2.1.3.1.5.4
Add and .
Step 8.2.5.2.2.1.3.1.5.5
Raise to the power of .
Step 8.2.5.2.2.1.3.1.5.6
Raise to the power of .
Step 8.2.5.2.2.1.3.1.5.7
Use the power rule to combine exponents.
Step 8.2.5.2.2.1.3.1.5.8
Add and .
Step 8.2.5.2.2.1.3.1.6
Rewrite as .
Step 8.2.5.2.2.1.3.1.7
Rewrite as .
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Step 8.2.5.2.2.1.3.1.7.1
Use to rewrite as .
Step 8.2.5.2.2.1.3.1.7.2
Apply the power rule and multiply exponents, .
Step 8.2.5.2.2.1.3.1.7.3
Combine and .
Step 8.2.5.2.2.1.3.1.7.4
Cancel the common factor of .
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Step 8.2.5.2.2.1.3.1.7.4.1
Cancel the common factor.
Step 8.2.5.2.2.1.3.1.7.4.2
Rewrite the expression.
Step 8.2.5.2.2.1.3.1.7.5
Evaluate the exponent.
Step 8.2.5.2.2.1.3.1.8
Multiply by .
Step 8.2.5.2.2.1.3.2
Subtract from .
Step 8.2.5.2.2.1.3.3
Subtract from .
Step 8.2.5.2.2.1.4
Reorder and .
Step 8.2.6
Solve for for .
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Step 8.2.6.1
Raise each side of the equation to the power of to eliminate the fractional exponent on the left side.
Step 8.2.6.2
Simplify the exponent.
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Step 8.2.6.2.1
Simplify the left side.
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Step 8.2.6.2.1.1
Simplify .
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Step 8.2.6.2.1.1.1
Multiply the exponents in .
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Step 8.2.6.2.1.1.1.1
Apply the power rule and multiply exponents, .
Step 8.2.6.2.1.1.1.2
Cancel the common factor of .
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Step 8.2.6.2.1.1.1.2.1
Cancel the common factor.
Step 8.2.6.2.1.1.1.2.2
Rewrite the expression.
Step 8.2.6.2.1.1.2
Simplify.
Step 8.2.6.2.2
Simplify the right side.
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Step 8.2.6.2.2.1
Simplify .
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Step 8.2.6.2.2.1.1
Rewrite as .
Step 8.2.6.2.2.1.2
Expand using the FOIL Method.
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Step 8.2.6.2.2.1.2.1
Apply the distributive property.
Step 8.2.6.2.2.1.2.2
Apply the distributive property.
Step 8.2.6.2.2.1.2.3
Apply the distributive property.
Step 8.2.6.2.2.1.3
Simplify and combine like terms.
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Step 8.2.6.2.2.1.3.1
Simplify each term.
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Step 8.2.6.2.2.1.3.1.1
Multiply by .
Step 8.2.6.2.2.1.3.1.2
Multiply .
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Step 8.2.6.2.2.1.3.1.2.1
Multiply by .
Step 8.2.6.2.2.1.3.1.2.2
Multiply by .
Step 8.2.6.2.2.1.3.1.3
Multiply .
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Step 8.2.6.2.2.1.3.1.3.1
Multiply by .
Step 8.2.6.2.2.1.3.1.3.2
Multiply by .
Step 8.2.6.2.2.1.3.1.4
Multiply .
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Step 8.2.6.2.2.1.3.1.4.1
Multiply by .
Step 8.2.6.2.2.1.3.1.4.2
Multiply by .
Step 8.2.6.2.2.1.3.1.4.3
Raise to the power of .
Step 8.2.6.2.2.1.3.1.4.4
Raise to the power of .
Step 8.2.6.2.2.1.3.1.4.5
Use the power rule to combine exponents.
Step 8.2.6.2.2.1.3.1.4.6
Add and .
Step 8.2.6.2.2.1.3.1.4.7
Raise to the power of .
Step 8.2.6.2.2.1.3.1.4.8
Raise to the power of .
Step 8.2.6.2.2.1.3.1.4.9
Use the power rule to combine exponents.
Step 8.2.6.2.2.1.3.1.4.10
Add and .
Step 8.2.6.2.2.1.3.1.5
Rewrite as .
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Step 8.2.6.2.2.1.3.1.5.1
Use to rewrite as .
Step 8.2.6.2.2.1.3.1.5.2
Apply the power rule and multiply exponents, .
Step 8.2.6.2.2.1.3.1.5.3
Combine and .
Step 8.2.6.2.2.1.3.1.5.4
Cancel the common factor of .
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Step 8.2.6.2.2.1.3.1.5.4.1
Cancel the common factor.
Step 8.2.6.2.2.1.3.1.5.4.2
Rewrite the expression.
Step 8.2.6.2.2.1.3.1.5.5
Evaluate the exponent.
Step 8.2.6.2.2.1.3.1.6
Rewrite as .
Step 8.2.6.2.2.1.3.1.7
Multiply by .
Step 8.2.6.2.2.1.3.2
Subtract from .
Step 8.2.6.2.2.1.3.3
Add and .
Step 8.2.7
List all of the solutions.
Step 9
The final solution is all the values that make true.