# whats the solutions to x^2-x-20+0

What two number multiply to -20, and add to -1?

## To find the solutions to the quadratic equation x^2 - x - 20 = 0, we can use factoring or the quadratic formula.

To use factoring, we need to find two numbers that multiply to -20 and add up to -1. Let's list down the factors of -20:

1, -20

-1, 20

2, -10

-2, 10

4, -5

-4, 5

From these pairs, we can see that -4 and 5 add up to give us -1. So, we can rewrite the equation as:

(x - 4)(x + 5) = 0

Now, we can set each factor equal to zero and solve for x:

x - 4 = 0 or x + 5 = 0

Solving these equations:

x = 4 or x = -5

Therefore, the solutions to the equation x^2 - x - 20 = 0 are x = 4 and x = -5.