Wolfram|Alpha can apply the quadratic formula to solve equations coercible into the formStart Power, Start base, ax , base End,Start exponent, 2 , exponent End , Power End + bx + c = 0ax2+bx+c=0. In doing so, Wolfram|Alpha finds both the real and complex roots of these equations...
Very simple to use just input you a,b, and c values from the standard equation of the quadratic formula and press solve. You can select how many decimal places you would like your answer to go out to or you can use the wolframalpha feature to get an exact answer if one is available...
equations for solutions in exact, simplest Radical form when appropriate.Settings let you choose to present all solutions in decimal form and the number of decimals to round to.All solving and simplifying logic is done by the device, so no reliance on external solving engines like WolframAlpha....