How do you find the roots, real and imaginary, of #y=(x-2)(x+1)-3x# using the quadratic formula?
In order to use the quadratic formula it is first necessary to convert the given equation into standard form.
Roots for an equation of the form:
are given by the quadratic formula
In this case
So the roots are
We have only real roots, which are
The roots of
given by quadratic formula
Hence, roots are