document.write( "Question 1047990: Find f(x-h) when f(x) = x^2 +2x -7\r
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Algebra.Com's Answer #663550 by Edwin McCravy(20055)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "f(x) = x² + 2x - 7\r\n" );
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document.write( "Spread it way apart like this:\r\n" );
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document.write( "f(  x  ) =   x  ² + 2  x   - 7\r\n" );
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document.write( "Erase all the x's\r\n" );
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document.write( "f(     ) =      ² + 2      - 7\r\n" );
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document.write( "Put (x-h) where the x's were\r\n" );
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document.write( "f((x+h)) = (x+h)² + 2(x+h) - 7\r\n" );
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document.write( "We don't need double parentheses on the left,\r\n" );
document.write( "so we make them single parentheses:\r\n" );
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document.write( "  f(x+h) = (x+h)² + 2(x+h) - 7\r\n" );
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document.write( "You can leave it like that or you can multiply \r\n" );
document.write( "the expressions out on the right.\r\n" );
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document.write( "  f(x+h) = x² + 2hx + h² + 2h + 2x - 7\r\n" );
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document.write( "Edwin
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