You can
put this solution on YOUR website!
Solving this means finding the roots, or finding
the values of
that make
true.
If I just say, off the top of my head,
for
a solution, then I'm saying
and
That's not true, so
is not a solution
One way to solve this is by completing the square.
First add
to both sides
Now take one-half of the coefficient of the
term,
square it, and add it to both sides, like this:
This is the same as
Now take the square root of both sides
and also
(since
has a + and a - square root)
Subtract
from both sides
And also
So, the solutions are
and
Plug these values into the equation to see if they
are roots, for instance:
So,
is a solution
