## The QUADRATIC FORMULA (hidden behind a secret panel) |

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".

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)

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