Algebra Examples

Find the Roots (Zeros) -x^3+x^2+x-1
Step 1
Set equal to .
Step 2
Solve for .
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Step 2.1
Factor the left side of the equation.
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Step 2.1.1
Factor out the greatest common factor from each group.
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Step 2.1.1.1
Group the first two terms and the last two terms.
Step 2.1.1.2
Factor out the greatest common factor (GCF) from each group.
Step 2.1.2
Factor the polynomial by factoring out the greatest common factor, .
Step 2.1.3
Rewrite as .
Step 2.1.4
Factor.
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Step 2.1.4.1
Since both terms are perfect squares, factor using the difference of squares formula, where and .
Step 2.1.4.2
Remove unnecessary parentheses.
Step 2.1.5
Combine exponents.
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Step 2.1.5.1
Factor out of .
Step 2.1.5.2
Rewrite as .
Step 2.1.5.3
Factor out of .
Step 2.1.5.4
Rewrite as .
Step 2.1.5.5
Raise to the power of .
Step 2.1.5.6
Raise to the power of .
Step 2.1.5.7
Use the power rule to combine exponents.
Step 2.1.5.8
Add and .
Step 2.2
If any individual factor on the left side of the equation is equal to , the entire expression will be equal to .
Step 2.3
Set equal to and solve for .
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Step 2.3.1
Set equal to .
Step 2.3.2
Solve for .
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Step 2.3.2.1
Set the equal to .
Step 2.3.2.2
Add to both sides of the equation.
Step 2.4
Set equal to and solve for .
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Step 2.4.1
Set equal to .
Step 2.4.2
Subtract from both sides of the equation.
Step 2.5
The final solution is all the values that make true.
Step 3