document.write( "Question 273823: Given that $\"+f%28x%29=3x%5E2-7x%2B1+\"$
\n" ); document.write( "find f(-1)
\n" ); document.write( "find f(x+1)
\n" ); document.write( "find f(x+h)\r
\n" ); document.write( "\n" ); document.write( "I have spent a lot of time on these problems, and I must be missing something because I cannot get them right. \r
\n" ); document.write( "\n" ); document.write( "My answer for the second one was $\"+3x%5E2-7x%2B11+\"$
\n" ); document.write( " for the third one was $\"+3x%5E2%2B3h%5E2-7x%2B1+\"$
\n" ); document.write( "My answer for the first was the most confusing of all, depending on whether I entered it entirely into my calculator, and if I broke the problem into segments ( $\"+3%28-1%29%5E2-7%28-1%29%2B1+\"$ vs $\"3-7%2B1\"$ my answer changed. The first was 11, the second was -3. \n" ); document.write( "

Algebra.Com's Answer #199993 by jim_thompson5910(35256) $\"\"$ $\"About$

You can put this solution on YOUR website!
# 1\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28x%29=3x%5E2-7x%2B1\"$ Start with the given equation.\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28-1%29=3%28-1%29%5E2-7%28-1%29%2B1\"$ Plug in $\"x=-1\"$ .\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28-1%29=3%281%29-7%28-1%29%2B1\"$ Square $\"-1\"$ to get $\"1\"$ .\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28-1%29=3-7%28-1%29%2B1\"$ Multiply $\"3\"$ and $\"1\"$ to get $\"3\"$ .\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28-1%29=3%2B7%2B1\"$ Multiply $\"-7\"$ and $\"-1\"$ to get $\"7\"$ .\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28-1%29=11\"$ Combine like terms.\r
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\n" ); document.write( "\n" ); document.write( "# 2\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28x%29=3x%5E2-7x%2B1\"$ Start with the given equation.\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28x%2B1%29=3%28x%2B1%29%5E2-7%28x%2B1%29%2B1\"$ Replace each 'x' with 'x+1'.\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28x%2B1%29=3%28x%5E2%2B2x%2B1%29-7%28x%2B1%29%2B1\"$ FOIL\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28x%2B1%29=3x%5E2%2B6x%2B3-7x-7%2B1\"$ Distribute\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28x%2B1%29=3x%5E2-x-3\"$ Combine like terms.\r
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\n" ); document.write( "\n" ); document.write( "# 3\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28x%29=3x%5E2-7x%2B1\"$ Start with the given equation.\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28x%2Bh%29=3%28x%2Bh%29%5E2-7%28x%2Bh%29%2B1\"$ Replace each 'x' with 'x+h'.\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28x%2Bh%29=3%28x%5E2%2B2xh%2Bh%5E2%29-7%28x%2Bh%29%2B1\"$ FOIL\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28x%2Bh%29=3x%5E2%2B6xh%2B3h%5E2-7x-7h%2B1\"$ Distribute \n" ); document.write( "

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