The Quadratic Solver

The QUADRATIC FORMULA (hidden behind a secret panel)

One of the fiddliest jobs in maths is dealing with quadratic equations, especially if the solutions are not "real". Normally you need to use the quadratic formula... but not today !

Put the numbers for your quadratic equation in the boxes, then click SOLVE.

• If a term has a negative coefficient, put in a "-" before the number.
• If a term has a coefficient of one then you must put a "1" in the box

You get the two solutions worked out to loads of decimal places. If the solution is mixed, then the imaginary bit is marked with an "i".

x2+ x + = 0

x1= x2=

What a shame you can't take this into a GCSE exam with you!

By the way, did you know there's an old fashioned way of solving quadratics called Completing The Square?

To THE PHANTOM X (the algebra book)

To the GCSE Guide

Murderous Maths Main Index Page

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