negative b plus or minus the square root of b squared minus 4AC all over 2 A
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Put the quadratic equation into standard form; identify the coefficients (a, b, c), replace them in the equation, do the calculations.
There are an infinite number of different quadratic equations. The quadratic formula is a single formula that can be used to find the pair of solutions to every quadratic equation.
The quadratic equation in standard form is: ax2 + bx + c = 0. The solution is x = [-b ± √b2- 4ac)] ÷ 2a You can use either plus or minus - a quadratic equation may have two solutions.
Well, if the given quadratic equation cannot be factored, nor completed by the square, try using the quadratic formula.
Quadratic formula. It's easier to remember and you have to do less work.