# How can you solve x^2 – 4x – 5 = 0 by using the quadratic formula and by factoring?

Oct 21, 2015

Solve x^2 - 4x - 5 = 0

Ans: -1 and 5

#### Explanation:

y = x^2 - 4x - 5 = 0
Since (a - b + c = 0), use Shortcut. The 2 real roots are: - 1 and (-c/a = 5)