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Finite Math Examples
Step 1
Step 1.1
To find the interval for the first piece, find where the inside of the absolute value is non-negative.
Step 1.2
Solve the inequality.
Step 1.2.1
Multiply both sides by .
Step 1.2.2
Simplify.
Step 1.2.2.1
Simplify the left side.
Step 1.2.2.1.1
Cancel the common factor of .
Step 1.2.2.1.1.1
Cancel the common factor.
Step 1.2.2.1.1.2
Rewrite the expression.
Step 1.2.2.2
Simplify the right side.
Step 1.2.2.2.1
Multiply by .
Step 1.2.3
Subtract from both sides of the inequality.
Step 1.3
In the piece where is non-negative, remove the absolute value.
Step 1.4
To find the interval for the second piece, find where the inside of the absolute value is negative.
Step 1.5
Solve the inequality.
Step 1.5.1
Multiply both sides by .
Step 1.5.2
Simplify.
Step 1.5.2.1
Simplify the left side.
Step 1.5.2.1.1
Cancel the common factor of .
Step 1.5.2.1.1.1
Cancel the common factor.
Step 1.5.2.1.1.2
Rewrite the expression.
Step 1.5.2.2
Simplify the right side.
Step 1.5.2.2.1
Multiply by .
Step 1.5.3
Subtract from both sides of the inequality.
Step 1.6
In the piece where is negative, remove the absolute value and multiply by .
Step 1.7
Write as a piecewise.
Step 2
Step 2.1
Multiply both sides by .
Step 2.2
Simplify.
Step 2.2.1
Simplify the left side.
Step 2.2.1.1
Cancel the common factor of .
Step 2.2.1.1.1
Cancel the common factor.
Step 2.2.1.1.2
Rewrite the expression.
Step 2.2.2
Simplify the right side.
Step 2.2.2.1
Multiply by .
Step 2.3
Move all terms not containing to the right side of the inequality.
Step 2.3.1
Subtract from both sides of the inequality.
Step 2.3.2
Subtract from .
Step 3
Step 3.1
Divide each term in by and simplify.
Step 3.1.1
Divide each term in by . When multiplying or dividing both sides of an inequality by a negative value, flip the direction of the inequality sign.
Step 3.1.2
Simplify the left side.
Step 3.1.2.1
Dividing two negative values results in a positive value.
Step 3.1.2.2
Divide by .
Step 3.1.3
Simplify the right side.
Step 3.1.3.1
Divide by .
Step 3.2
Multiply both sides by .
Step 3.3
Simplify.
Step 3.3.1
Simplify the left side.
Step 3.3.1.1
Cancel the common factor of .
Step 3.3.1.1.1
Cancel the common factor.
Step 3.3.1.1.2
Rewrite the expression.
Step 3.3.2
Simplify the right side.
Step 3.3.2.1
Multiply by .
Step 3.4
Move all terms not containing to the right side of the inequality.
Step 3.4.1
Subtract from both sides of the inequality.
Step 3.4.2
Subtract from .
Step 4
Find the union of the solutions.
or
Step 5
Convert the inequality to interval notation.
Step 6