Question 40221
Quadratic equation  (in our case ) has the following solutons:



For these solutions to exist, the discriminant  should not be a negative number.

First, we need to compute the discriminant : .

Discriminant d=772 is greater than zero. That means that there are two solutions: .




Quadratic expression  can be factored:

Again, the answer is: 0.870518499560408, -0.287185166227075. Here's your graph: