How do you find the zeros of # y = x^2 - 5x -13 # using the quadratic formula?
The quadratic formula always gives two answers. In this case,
To find the 'zeros', you want to solve the function for when y=0:
There is a general form for this, which is what we will be using to describe the quadratic formula:
The quadratic formula looks like this:
For this case:
Now, let's plug those into the formula:
Now, we solve for both scenarios of x: