How do you find the roots, real and imaginary, of #y= (x+2)^2-x-5 # using the quadratic formula?
See a solution process below:
First, we need to expand the squared term on the right side of the equation using the rule:
#(a + b)^2 = a^2 + 2ab + b^2
We can now group and combine like terms to put the equation in standard form for a quadratic.
The quadratic formula states: