# Symbols in Algebra

## Common Symbols Used in Algebra

Symbols save time and space when writing. Here are the most common algebraic symbols:

Symbol | Meaning | Example |
---|---|---|

+ | add | 3+7 = 10 |

- | subtract | 5-2 = 3 |

× | multiply | 4×3 = 12 |

multiply (so "×" does not look like "x") | 4·3 = 12 | |

/ | divide | 20/5 = 4 |

square root ("radical") | √4 = 2 | |

cube root | ||

nth root |
||

( ) | grouping symbols (round brackets) | 2(a-3) |

[ ] | grouping symbols (square brackets) | 2[ a-3(b+c) ] |

{ } | set symbols (curly brackets) | {1,2,3} |

= | equals | 1+1 = 2 |

approximately equal to | π 3.14 | |

≠ | not equal to | π ≠ 2 |

< ≤ | less than, less than or equal to | 2 < 3 |

> ≥ | greater than, greater than or equal to | 5 > 1 |

implies (if ... then) | a and b are odda+b is even | |

"if and only if" or iff or "is equivalent to" |
x=y+1y=x−1 | |

Therefore | a=b b=a |