# How do you find the zeros of # y = 2x^2 + 4x -1 # using the quadratic formula?

##### 1 Answer

#### Explanation:

This quadratic function is written in "standard form", or

The quadratic formula uses the numbers a, b, and c like this:

comparing the original function to the general, standard form function above, we see that

Plug these in the quadratic formula:

To simplify that

You can take out

From here, divide through by 4 to get

...and remember, quadratic functions **always** have two solutions!