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The equation is .
Solve the equation.
(Original equation)
(Factor the perfect square trinomial)
(Square root property)
(Substitute: )
(Subtract from each side)
(Apply additive inverse property: )
and (Write as two equations)
and (Simplify)
The solution set is .
Check solution for -values.
Case (i):
(Original equation)
(Substitute )
(Evaluate powers: )
(Multiply)
(Substitute: )
Case (ii):
(Original equation)
(Substitute )
(Evaluate powers: )
(Multiply)
(Substitute: )
The solution set is .
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