Concept explainers
To Explain: The solving procedure of
The values of
Given information:
Given expression,
Calculation:
Solve
by using the table:
Rewrite the equation as:
Make a table of
There will be intervals separated by where
Substitute
Substitute
Substitute
Substitute
Substitute
The solution is where the
Thus, the value of
Solve by algebraically:
Convert the inequality to an equation:
Use the quadratic formula to find the solutions.
Substitute the values
The solutions are:
Choose a test value from each interval and plug this value into the original inequality to
determine which intervals satisfy the inequality.
Test a value on the interval
Choose a value on the interval
Replace
The left side
Test a value on the interval
Choose a value on the interval
Replace
The left side
Test a value on the interval
Choose a value on the interval
Replace
The left side
Hence, the solution consists of all of the true intervals is
Chapter 1 Solutions
EBK ALGEBRA 2
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