$\"\"$

The equation is $\"\"$ .

The perfect square of the given trinomial $\"\"$ .

$\"\"$

$\"\"$ (Take the square root of each side)

Apply square roots property: If $\"\"$ then $\"\"$ .

$\"\"$

Apply addition property of equality: If a = b then a $\"\"$ c = b $\"\"$ c.

$\"\"$ (Subtract 7 from each side)

$\"\"$ (Apply additive inverse property: $\"\"$ ) \ \

$\"\"$

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

The solution set is $\"\"$ .