We are going to label
our a, b and c values
so that we can plug it
into the quadratic formula
that's in the top right-hand corner.
If we do that,
that's going to give us
x equals negative 17 plus
or minus the square root of 289 plus 336,
all over four.
If we simplify this,
we get negative 17 plus
or minus the square root of 625,
all over four.
The square root of 625 is 25.
So we're going to get negative 17 plus
or minus 25, all over four.
So if we have negative
17 plus 25 over four,
we're going to get an answer of two.
Or negative 17 minus 25 over four,
which is going to give us an answer
of negative 21 over two.
So our answers are two
or negative 21 over two.
