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<title>Symbols in Algebra</title>
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<h1 align="center">Symbols in Algebra</h1>
<h2>Common Symbols Used in Algebra</h2>
<p>Symbols save time and space when writing. Here are the most common algebraic symbols:</p>
<div class="simple">
<table border="0" align="center" width="92%" cellpadding="3">
<tr align="center">
<th>Symbol</th>
<th>Meaning</th>
<th bgcolor="#FFFFFF">Example</th>
</tr>
<tr align="center">
<td bgcolor="#FFFFCC" class="large">+</td>
<td bgcolor="#FFFFCC">add</td>
<td>3+7 = 10</td>
</tr>
<tr align="center">
<td bgcolor="#FFFFCC" class="large">&minus;</td>
<td bgcolor="#FFFFCC">subtract</td>
<td>5&minus;2 = 3</td>
</tr>
<tr align="center">
<td bgcolor="#FFFFCC">&times;</td>
<td bgcolor="#FFFFCC">multiply</td>
<td>4&times;3 = 12</td>
</tr>
<tr align="center">
<td bgcolor="#FFFFCC"><img src="../images/symbols/symbol-multiply.gif" width="14" height="13" alt="multiply symbol" /></td>
<td bgcolor="#FFFFCC">multiply (as &quot;&times;&quot; can look like &quot;x&quot;)</td>
<td>4&middot;3 = 12</td>
</tr>
<tr align="center">
<td bgcolor="#FFFFCC">/</td>
<td bgcolor="#FFFFCC">divide</td>
<td>20/5 = 4</td>
</tr>
<tr align="center">
<td bgcolor="#FFFFCC"><img src="../images/symbols/radical.gif" width="35" height="32" alt="radical symbol" /></td>
<td bgcolor="#FFFFCC"><a href="../square-root.html">square root</a> (&quot;radical&quot;)</td>
<td>&radic;4 = 2</td>
</tr>
<tr align="center">
<td bgcolor="#FFFFCC"><img src="../images/symbols/cube-root.gif" width="32" height="32" alt="cube root symbol" /></td>
<td bgcolor="#FFFFCC"><a href="../numbers/cube-root.html">cube root</a></td>
<td>&nbsp;</td>
</tr>
<tr align="center">
<td bgcolor="#FFFFCC"><img src="../images/symbols/nth-root.gif" width="32" height="32" alt="nth root symbol" /></td>
<td bgcolor="#FFFFCC"><a href="../numbers/nth-root.html"><b>n</b>th root</a></td>
<td>&nbsp;</td>
</tr>
<tr align="center">
<td bgcolor="#FFFFCC" class="large">( ) </td>
<td bgcolor="#FFFFCC">grouping symbols <a href="brackets.html">(round brackets)</a></td>
<td>2(a&minus;3)</td>
</tr>
<tr align="center">
<td bgcolor="#FFFFCC" class="large">[ ]</td>
<td bgcolor="#FFFFCC">grouping symbols <a href="brackets.html">(square brackets)</a></td>
<td>2[ a&minus;3(b+c) ]</td>
</tr>
<tr align="center">
<td bgcolor="#FFFFCC" class="large">{ }</td>
<td bgcolor="#FFFFCC"><a href="../sets/sets-introduction.html">set symbols</a> <a href="brackets.html">(curly brackets)</a></td>
<td>{1,2,3}</td>
</tr>
<tr align="center">
<td bgcolor="#FFFFCC" class="large">=</td>
<td bgcolor="#FFFFCC">equals</td>
<td>1+1 = 2</td>
</tr>
<tr align="center">
<td bgcolor="#FFFFCC"><img src="../images/symbols/symbol-approx-equal.gif" width="22" height="25" alt="approximately equal symbol" /></td>
<td bgcolor="#FFFFCC">approximately equal to</td>
<td><span class="times">&pi;</span> <img src="../images/symbols/symbol-approx-equal.gif" alt="approximately equal symbol" width="22" height="25" align="absmiddle" />3.14</td>
</tr>
<tr align="center">
<td bgcolor="#FFFFCC"><span class="large">&ne;</span></td>
<td bgcolor="#FFFFCC">not equal to</td>
<td><span class="times">&pi;</span> <span class="large">&ne;</span> 2</td>
</tr>
<tr align="center">
<td bgcolor="#FFFFCC" class="large">&lt; &le;</td>
<td bgcolor="#FFFFCC"><a href="../equal-less-greater.html">less than</a>, less than or equal to</td>
<td>2 &lt; 3</td>
</tr>
<tr align="center">
<td bgcolor="#FFFFCC" class="large">&gt; &ge;</td>
<td bgcolor="#FFFFCC"><a href="../equal-less-greater.html">greater than</a>, greater than or equal to</td>
<td>5 &gt; 1</td>
</tr>
<tr align="center">
<td bgcolor="#FFFFCC"><img src="../images/symbols/symbol-implies.gif" width="26" height="20" alt="implies symbol" /></td>
<td bgcolor="#FFFFCC"><a href="implication-iff.html">implies</a> (if ... then)</td>
<td>a and b are odd<img src="../images/symbols/symbol-implies.gif" alt="implies symbol" width="26" height="20" align="absmiddle" />a+b is even</td>
</tr>
<tr align="center">
<td bgcolor="#FFFFCC"><img src="../images/symbols/symbol-iff.gif" width="42" height="20" alt="iff symbol" /></td>
<td bgcolor="#FFFFCC">&quot;<a href="implication-iff.html">if and only if</a>&quot; or <b>iff</b> or &quot;is equivalent to&quot;</td>
<td>x=y+1<img src="../images/symbols/symbol-iff.gif" alt="iff symbol" width="42" height="20" align="absmiddle" />y=x−1</td>
</tr>
<tr align="center">
<td bgcolor="#FFFFCC"><img src="../images/symbols/therefore.gif" width="28" height="28" alt="therefore symbol" /></td>
<td bgcolor="#FFFFCC">Therefore</td>
<td><i>a=b <img src="../images/symbols/therefore-sm.gif" width="14" height="15" alt="therefore" /> b=a</i></td>
</tr>
<tr align="center">
<td bgcolor="#FFFFCC">!</td>
<td bgcolor="#FFFFCC"><a href="../numbers/factorial.html">Factorial</a></td>
<td>4! = 4&times;3&times;2&times;1 = 24</td>
</tr>
</table>
<p> </p>
<p> </p>
</div>
<div class="related">
<a href="../geometry/symbols.html">Symbols in Geometry</a>
<a href="../symbols.html">Symbols in Mathematics</a>
<a href="index.html">Algebra Index</a>
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