document.write( "Question 92290: Given f(x) = 5x2 – 3x + 1, find f(–2). \n" ); document.write( "
Algebra.Com's Answer #67137 by jim_thompson5910(35256)\"\" \"About 
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\"f%28x%29=5x%5E2-3x%2B1\" Start with the given polynomial\r
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\n" ); document.write( "\n" ); document.write( "\"f%28-2%29=5%28-2%29%5E2-3%28-2%29%2B1\" Plug in \"x=-2\"\r
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\n" ); document.write( "\n" ); document.write( "\"f%28-2%29=5%284%29-3%28-2%29%2B1\" Raise -2 to the second power to get 4\r
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\n" ); document.write( "\n" ); document.write( "\"f%28-2%29=20-3%28-2%29%2B1\" Multiply 5 by 4 to get 20\r
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\n" ); document.write( "\n" ); document.write( "\"f%28-2%29=20--6%2B1\" Multiply 3 by -2 to get -6\r
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\n" ); document.write( "\n" ); document.write( "\"f%28-2%29=20%2B6%2B1\" Negate any negatives\r
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\n" ); document.write( "\n" ); document.write( "\"f%28-2%29=27\" Now combine like terms\r
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\n" ); document.write( "\n" ); document.write( "So when \"x=-2\", \"f%28-2%29=27\"
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