How do you solve #4x^2 +4x = 15# using the quadratic formula?
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.
Now Use The Quadratic Formula or Sridhar Acharya's Rule (whatever you may call it in your country).
Hope this helps.
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: