document.write( "Question 568428: What is the value of f(-3). The equation is f(-3)?f(x) = 2x second power+ 5x-9 \n" ); document.write( "
Algebra.Com's Answer #366947 by jim_thompson5910(35256)\"\" \"About 
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\"f%28x%29+=+2x%5E2%2B5x-9\" Start with the given function\r
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\n" ); document.write( "\n" ); document.write( "\"f%28-3%29+=+2%28-3%29%5E2%2B5%28-3%29-9\" Plug in \"x=-3\" (ie replace every x with -3)\r
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\n" ); document.write( "\n" ); document.write( "\"f%28-3%29+=+2%289%29%2B5%28-3%29-9\" Square -3 to get 9\r
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\n" ); document.write( "\n" ); document.write( "\"f%28-3%29+=+18-15-9\" Multiply\r
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\n" ); document.write( "\n" ); document.write( "\"f%28-3%29+=+-6\" Combine like terms\r
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\n" ); document.write( "\n" ); document.write( "So the answer is \"f%28-3%29+=+-6\"\r
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