The equation is .
(Original equation)
The standard form equation is .
Compare the above two equations and
.
Solve the equation.
\ (Formula for quadratic equation)
(Substitute
and
)
(Multiply)
(Evaluate powers:
)
(Add:
)
(Substitute :
)
or
(Write as two equation)
or
(Subtract)
or
(Simplify)
Therefore, the solutions are and
.
Check the solution for - values by the graphing method.
Consider the related function .
Graph:
\Graph the function is . \ \
Observe the graph:
\The curve touches the -axis at
and
.
Therefore, the solutions are and
.
The solutions are and
.