The equation is .
Write two cases:
\Case-1:
Case-2:
Solve the equation for Case-1.
\Check:
\To check the solution, substitute in original equation.
(The absolute value of 7 is 7)
Compare the values the equation is true. is a solution.
Solve the equation for Case-2.
\Check:
\To check the solution, substitute in original equation.
(The absolute value of
is 7)
Compare the values the equation is true. is a solution.
The solution set is .