The equation is
.
Rewrite in the standard form equation is
,
(Add
to each side)
(Apply additive inverse property:
)

Compare the above two equations
.
Apply the Quadratic Formula: 
(Substitute
)
(Product of two same signs is positive)
(Evaluate powers: 
)
(Multiply:
)
(Multiply:
)
(Multiply:
)
(Apply additive inverse property:
)
(The value of
)
(Divide:
)
The solution is
.
The solution is
.