document.write( "Question 1034947: Find the 6th term of (-4a+3b)^13 \n" ); document.write( "

Algebra.Com's Answer #649581 by ikleyn(52790) $\"\"$ $\"About$

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document.write( "  1-st term               2-nd term              3-rd term             4-th term             5-th term            6-th term\r\n" );
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document.write( "               \r\n" );
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document.write( "The 6-th term is   (the general formula is  ,  k = 0 (first term), 1 (the 2-nd term), 2 (the 3-rd term), . . . ).\r\n" );
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document.write( "Or, after simplifying,  =  =  = .\r\n" );
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document.write( " =  =  = 1287  is the number of combination 13 things taken 5 at a time.\r\n" );
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document.write( "On combinations, see the lesson Introduction to Combinations in this site.\r\n" );
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document.write( "On binomial expansion see the lesson Binomial Theorem, Binomial Formula, Binomial Coefficients and Binomial Expansion.\r\n" );
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