Question

How do you solve `x^2+5x-2=0` using the quadratic formula?

Answer 1

`x = -5/2 +- sqrt33/2`

Explanation:

`y = x^2 + 5x - 2 = 0`
Use the improved quadratic formula (Google, Yahoo Search)
`D = d^2 = b^2 - 4ac = 25 + 8 = 33` -->`d = +- sqrt33`
There are 2 real roots.
`x = -b/(2a) +- d/(2a) = -5/2 +- sqrt33/2`