Question

can some one plain to me the quadratic formula?

Answer 1

You mean explain how to use it? For example if you have
\[x^{2}-x-6=0\]
how do you use the quadratic formula to find the solution?

Answer 2

The quadratic formula is a formula that gives the roots of a quadratic equation. This is the formula:

x=(−b±b2−4ac−−−−−−−√)/(2a)


If you have an equation,

ax2+bx+c


you would use the corresponding numerals in the quadratic equation to plug into the formula.

For instance:

\[x ^{2}+4x+3\]

Answer 3

Quadratic formula finds the two solutions that you are looking for. Factoring does not always work but the formula works 100% of the time.