$\"\"$

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The equation is $\"\"$ .

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Solve the equation.

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$\"\"$ (Original equation)

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$\"\"$ (Rewrite the equation)

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$\"\"$ (Differences of squares)

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$\"\"$ and $\"\"$ (Zero product property)

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$\"\"$ and $\"\"$ (Simplify)

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$\"\"$ and $\"\"$ (Take square root on each side)

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$\"\"$ and $\"\"$ (Solve for $\"\"$ )

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The equation has four roots, two real and two imaginary roots, $\"\"$ and $\"\"$ .

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$\"\"$

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Check solution for $\"\"$ -values.

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Graph:

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Graph the equation $\"\"$ .

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$\"\"$

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Observe the graph:

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The graph cross the $\"\"$ - axis at $\"\"$ and $\"\"$ .

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Therefore, the value of $\"\"$ is $\"\"$ and $\"\"$ .

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$\"\"$

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The equation has four roots, two real roots and two imaginary roots.