# Help:Formula

For many purposes the special characters listed in Help:Contribute Character formatting section will suffice.

For more complex formluae the mathematical formulae may be required. This type of formula is contained by $tags as follows: [itex]2 + 2$ produces 2 + 2.

The syntax for the formula is fairly simple, honestly—The formula is composed of bits as you would normally try to type them. ax^2 + bx + c = 0[/itex] is rendered as ax2 + bx + c = 0

To combine basic expressions like the above into complicated formulae, the following constructions are helpful.

### Fractions

\frac{ numerator }{ denominator }

### Roots

 Square root: \sqrt{x} Cube root: \sqrt[3]{x} Nth root: \sqrt[n]{x}