Question

Solve the equation with the quadratic formula.
11k^2 - 10k + 7

Answer 1

You should have the quadratic formula memorized. Look in the cover of you book for it.

Answer 2

i have it memorized, and i know how to use it.
im confused with the imaginary numbers

Answer 3

So for complex numbers (using "i" for imaginary), just make the sqrt(-208) into
sqrt(208)i
For a visual of what is really happening (no x intercept) look here:
http://www.purplemath.com/modules/complex3.htm

For a more thorough explanation, go here:
https://www.khanacademy.org/math/algebra2/polynomial_and_rational/quad_formula_tutorial/v/discriminant-of-quadratic-equations