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Roots of a Quadratic Equation

The calculator solves for the roots of a quadratic equation.  Enter values into the fields to form equation of the type

ax2 + bx + c = 0

and press 'calculate'. The roots are given in the form

m + ni

where i is the square root of -1. If n is not zero then the root is complex. If n is zero then the root is real.

Press "see graphical function" to display the graph for the function you input (requires Java).

x2   +   x   +     =  0  
ax2   +   bx   +   c   =  0  
number of significant figures:



©2017 Dr Toby Hudson
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