document.write( "Question 112285: Given f(x) = 5x2 – 3x + 1, find f(–2) \n" ); document.write( "

Algebra.Com's Answer #81906 by jim_thompson5910(35256) $\"\"$ $\"About$

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\n" ); document.write( "\n" ); document.write( " $\"f%28x%29=5x%5E2-3x%2B1\"$ Start with the given function.\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 $\"x=-2\"$ . In other words, replace each x with -2.\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28-2%29=5%284%29-3%28-2%29%2B1\"$ Evaluate $\"%28-2%29%5E2\"$ to get 4.\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28-2%29=%2B20-3%28-2%29%2B1\"$ Multiply 5 and 4 to get 20\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28-2%29=%2B20%2B6%2B1\"$ Multiply -3 and -2 to get 6\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28-2%29=27\"$ Now combine like terms \n" ); document.write( "

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