# Simplifier-entering formulas

 This page discusses Algebra.com's Simplifier. It simplifies expressions and will soon solve equations and do substitutions. Go to the formula simplifier portal for information on this extremely powerful tool. You can also see many use examples and live practice with the simplifier. It can also be used in tutors to quickly explain simplification and evaluation in cartoon form. This page discusses plotting formulae on Algebra.com. Go to the formula plotting portal for formula, math cartoon and diagram plotting help. You can also see many use examples and live practice with plotting formulas, graphs and cartoons. It is a very powerful system for helping to explain math to children.

## Entering formulas for simplifier

The formulas that my simplifier simplifies, are entered the same way as in my formula plotting system. However, to simplify a formula, it needs to be understood much more deeply than when we just want to draw it as a picture. Therefore, there are some important requirements.

## Requirements

• DO use multiplication sign '*' (the STAR) symbol. For the simplifier, xy is NOT the same as x*y or yx. Simplifier thinks that xy is a separate variable. Good example: x*y-y*(x+2). Bad example: xy-y(x+2).
• DO use '*' when multiplying a variable by an expression in parentheses: x*(x+2). Otherwise, my simplifier will think that you are trying to use a function and will become confused.
• Use parentheses liberally to avoid any ambiguity. (x+y)/(x-y) is NOT the same as x+y/x-y. x+y/x-y means x+(y/x)-y.

## Operations

• Use '*' (STAR) for multiplication. 2*3 is legal, 2x3 will be misunderstood.
• Use '^' (CARET) for power. 2^3 means 2 to degree of 3, or 8.
• Use '/' (FORWARD SLASH) for division
• Only '(' and ')' (parentheses) are allowed for grouping terms. Curly or square brackets are used for other purposes.

Operation priority: + and - have lowest priority, * and / h

## Good Examples

```x*y-x*(y+2)   <-- '*' is used for multiplications
a^b*3         <-- means (a to the degree of b) multiplied by 3
```

```xy-yx         <-- variable xy and variable yx are different variables