document.write( "Question 1185340: Find the coefficient of x^27 in the expansion of (x^2+3x)^15 \n" ); document.write( "

Algebra.Com's Answer #816161 by Edwin McCravy(20060) $\"\"$ $\"About$

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document.write( "Every term of  is of the form \r\n" );
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document.write( "Therefore, every term of  is of the form\r\n" );
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document.write( "We want the exponent of x to be 27, so we set\r\n" );
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document.write( "15+r = 27\r\n" );
document.write( "   r = 12\r\n" );
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document.write( "Its coefficient is 12285\r\n" );
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document.write( "Edwin

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