document.write( "Question 1117567: find the coefficient of x^2 in the expansion of {x - 1/2(x^2)}^20 \n" ); document.write( "
Algebra.Com's Answer #732697 by greenestamps(13200)\"\" \"About 
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\n" ); document.write( "To get an x^2 term, you need to take the \"x\" term 14 times and the \"1/x^2\" term 6 times:

\n" ); document.write( "\"%28x%5E14%29%2A%281%2Fx%5E2%29%5E6+=+x%5E14%2Fx%5E12+=+x%5E2\"

\n" ); document.write( "So the x^2 term in the expansion is

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