$\"\"$

The quadratic equation is $\"\"$ .

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

$\"\"$ (Subtract 28x from each side)

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

The equation compare to quadratic equation, then a = 2, b = - 28 and c = 98. $\"\"$

Quadratic formula: $\"\"$ .

$\"\"$ (Substitute a = 2, b = - 28 and c = 98)

$\"\"$ (Evaluate power: $\"\"$ )

$\"\"$ (Simplify)

$\"\"$

$\"\"$ \ \

$\"\"$

The solution is $\"\"$ .