Answer:
x = [−b ± √(b2 − 4ac)]/2a
Step-by-step explanation:
The quadratic formula is used when factoring the quadratic expression
(ax2 + bx + c) is not easy or possible.
One requirement for using the formula is that a is not equal to zero (a ≠ 0),
because the result would then be infinite (∞).
