# How do you solve #4x^2 +4x = 15# using the quadratic formula?

##### 2 Answers

#### Explanation:

First Of All, Convert the Equation to It's General Form

So We have,

So, Comparing the Equation with the General Form, We get,

So, Let's Find the Discriminat.

As **real and distinct**.

Now Use The Quadratic Formula or Sridhar Acharya's Rule (whatever you may call it in your country).

And

So,

Hope this helps.

#### Explanation:

Make the expression equal to zero:

The quadratic formula is:

In our case we substitute:

So that the quadratic formula becomes:

We can also solve this by factorising (here you need to guess)

Then make both parenthesis equal to zero to get the same answers: