document.write( "Question 1138511: Find the derivative of f(x) = 12x2 + 8x at x = 9.
\n" ); document.write( "256
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\n" ); document.write( "-243
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\n" ); document.write( "288
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\n" ); document.write( "224
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Algebra.Com's Answer #756314 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "the derivative of \"f%28x%29+=+12x%5E2+%2B+8x\" at \"x+=+9\"\r
\n" ); document.write( "\n" ); document.write( "\"f\"'\"%28x%29\" =\"2%2A+12x+%2B+8\" \r
\n" ); document.write( "\n" ); document.write( "\"f\"'\"%28x%29\" =\"24x+%2B+8\" \r
\n" ); document.write( "\n" ); document.write( "at \"x+=+9\"\r
\n" ); document.write( "\n" ); document.write( "\"f\"'\"%28x%29\" =\"24%2A9+%2B+8\"\r
\n" ); document.write( "\n" ); document.write( " \"f\"'\"%28x%29\" =\"224\"
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