The formula for Quadratics is; x = [-b² ± √(b² - 4ac)]/2a
When solving quadratic equations, we can use either factor/factorization form or we make use of quadratic formula.
Now, quadratic formula is simply the most efficient to calculate quadratic equations and it is;
x = [-b² ± √(b² - 4ac)]/2a
Thus that is the formula for quadratics.
Read more about quadratic formula at; https://brainly.com/question/8649555