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The equation is .
Solve the equation.
(Original equation)
(Cross product)
(Factors)
(Group of the factors)
(Take out common factor)
and (Separate solutions)
and (Simplify)
Check:
Case(i):
(Original equation)
(Substitute in the equation)
(Evaluate powers in the equation)
(Multiply)
(Simplify)
(Subtract: )
(Simplify)
Case(ii):
(Original equation)
(Substitute in the equation)
(Evaluate powers in the equation)
(Multiply)
(Simplify)
(Subtract: )
(Simplify)
Therefore, the solutions are and .
The solutions are and .
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