$\"\"$

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The equation is $\"\"$ .

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The equation is a perfect square trinomial.

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$\"\"$

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Take square root on each side.

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$\"\"$

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$\"\"$

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Subtract 1 from each side.

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$\"\"$

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Apply additive inverse property: $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$ $\"\"$

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Check:

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To check the solution substitute $\"\"$ in $\"\"$ .

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$\"\"$

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Apply sum of squares formula: $\"\"$ .

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$\"\"$

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$\"\"$

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Product of two different sings is negative.

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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The first solution $\"\"$ is true. $\"\"$

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To check the solution substitute $\"\"$ in $\"\"$ .

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$\"\"$

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Apply formula: $\"\"$ .

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$\"\"$

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$\"\"$

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Product of two same sings is positive.

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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The second solution $\"\"$ is true. $\"\"$

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The values of $\"\"$ .