document.write( "Question 84723: Find the value of the polynomial x^3-4x when x=-2..How do I do this problem?? \n" ); document.write( "

Algebra.Com's Answer #61049 by ptaylor(2198) $\"\"$ $\"About$

You can put this solution on YOUR website!
First, we substitute x=-2 into the polynomial and we get:\r
\n" ); document.write( "\n" ); document.write( " $\"%28-2%29%5E3-4%28-2%29\"$ \r
\n" ); document.write( "\n" ); document.write( "Look at the first term:
\n" ); document.write( " $\"%28-2%29%5E3=%28-2%29%28-2%29%28-2%29=%28%2B4%29%28-2%29=-8\"$ \r
\n" ); document.write( "\n" ); document.write( "Look at second term\r
\n" ); document.write( "\n" ); document.write( " $\"-4%28-2%29=%2B8\"$ \r
\n" ); document.write( "\n" ); document.write( "Now let's put the two terms back together:\r
\n" ); document.write( "\n" ); document.write( "-8+8=0---------------------ans\r
\n" ); document.write( "\n" ); document.write( "Hope this helps----ptaylor
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