document.write( "Question 349447: Could someone please show me how to evaluate the following intergrals using the given substitutions?
\n" ); document.write( " ((3x^2 + 6x)dx) / (x^3 + 3x^2 +11), substitution: x^3 + 3x^2 +11\r
\n" ); document.write( "\n" ); document.write( "Thanks,
\n" ); document.write( "-Nick.
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Algebra.Com's Answer #249769 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
Let \"u=x%5E3%2B3x%5E2%2B11\"
\n" ); document.write( "\"du=%283x%5E2%2B6x%29dx\"
\n" ); document.write( "So then
\n" ); document.write( "\"+%28%283x%5E2+%2B+6x%29dx%29+%2F+%28x%5E3+%2B+3x%5E2+%2B11%29=du%2Fu\"
\n" ); document.write( "which can easily be integrated and then re-substituted.
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