document.write( "Question 599290: Try to find a number for x that when substituted in the formula X² - x + 23 yields a composite number. \n" ); document.write( "

Algebra.Com's Answer #378886 by jim_thompson5910(35256) $\"\"$ $\"About$

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Plug in various values of x (start at x = 1 and increment by 1, so plug in x = 2, then x = 3, etc..) and make the following table.\r
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document.write( "            x           y\r\n" );
document.write( "------------------------------------\r\n" );
document.write( "            0           23\r\n" );
document.write( "            1           23\r\n" );
document.write( "            2           25\r\n" );
document.write( "            3           29\r\n" );
document.write( "            4           35\r\n" );
document.write( "            5           43\r\n" );
document.write( "            6           53\r\n" );
document.write( "            7           65\r\n" );
document.write( "            8           79\r\n" );
document.write( "            9           95\r\n" );
document.write( "           10          113\r\n" );
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\n" ); document.write( "\n" ); document.write( "Looking at the table above, we can see that when x = 2, y = 25 (which is a composite number). So $\"x%5E2-x%2B23\"$ is composite when $\"x=2\"$ \n" ); document.write( "

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