document.write( "Question 1048158: f(x) = x2 + 7 Find f(a + 3).
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Algebra.Com's Answer #663727 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
\"f%28x%29+=+x%5E2+%2B+7\"\r
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\n" ); document.write( "\n" ); document.write( "\"f%28x%29+=+%28x%29%5E2+%2B+7\"\r
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\n" ); document.write( "\n" ); document.write( "\"f%28a%2B3%29+=+%28a%2B3%29%5E2+%2B+7\" Replace every 'x' with 'a+3'\r
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\n" ); document.write( "\n" ); document.write( "\"f%28a%2B3%29+=+a%5E2%2B6a%2B9+%2B+7\" FOIL\r
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\n" ); document.write( "\n" ); document.write( "\"f%28a%2B3%29+=+a%5E2%2B6a%2B16\" Combine like terms
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