Precalculus Examples

Since does not contain the variable to solve for, move it to the right side of the inequality by adding to both sides.
Move to the left side of the equation by subtracting it from both sides.
Convert the inequality to an equation.
Factor using the AC method.
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Consider the form . Find a pair of integers whose product is and whose sum is . In this case, whose product is and whose sum is .
Write the factored form using these integers.
Set equal to and solve for .
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Set the factor equal to .
Since does not contain the variable to solve for, move it to the right side of the equation by adding to both sides.
Set equal to and solve for .
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Set the factor equal to .
Since does not contain the variable to solve for, move it to the right side of the equation by subtracting from both sides.
Use each root to create test intervals.
Choose a test value from each interval and plug this value into the original inequality to determine which intervals satisfy the inequality.
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Test a value on the interval to see if it makes the inequality true.
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Choose a value on the interval and see if this value makes the original inequality true.
Replace with in the original inequality.
Simplify.
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Simplify each term.
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Raise to the power of to get .
Multiply by to get .
Simplify by subtracting numbers.
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Subtract from to get .
Subtract from to get .
The left side is greater than the right side , which means the given statement is false.
False
False
Test a value on the interval to see if it makes the inequality true.
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Choose a value on the interval and see if this value makes the original inequality true.
Replace with in the original inequality.
Simplify.
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Simplify each term.
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Raise to the power of to get .
Multiply by to get .
Simplify by subtracting numbers.
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Subtract from to get .
Subtract from to get .
The left side is less than the right side , which means the given statement is true.
True
True
Test a value on the interval to see if it makes the inequality true.
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Choose a value on the interval and see if this value makes the original inequality true.
Replace with in the original inequality.
Simplify.
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Simplify each term.
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Remove parentheses around .
Raise to the power of to get .
Multiply by to get .
Simplify by adding and subtracting.
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Add and to get .
Subtract from to get .
The left side is greater than the right side , which means the given statement is false.
False
False
Compare the intervals to determine which ones satisfy the original inequality.
False
True
False
False
True
False
The solution consists of all of the true intervals.
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