How do you find the roots, real and imaginary, of #y= -2x^2 - 5x + 6 - (x-5)^2 # using the quadratic formula?
You gotta write it in standard form...
first, multiply out:
...now, collect the terms
...and now you have your coefficients a, b, and c:
a = -3, b = 5, c = -19
...that you can plug into the quadratic formula:
...and I'll bet you can take it from here.