document.write( "Question 1110201: Prove (n+1)p(r) = (n)p(r) + 4.(n)p(r-1)
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Algebra.Com's Answer #725207 by ikleyn(52787)\"\" \"About 
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\n" ); document.write( "Prove (n+1)p(r) = (n)p(r) + 4.(n)p(r-1)
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\n" ); document.write( "\n" ); document.write( "Wrong identity.\r
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\n" ); document.write( "\n" ); document.write( "To see the correct version (with the Proof), look into the lesson\r
\n" ); document.write( "\n" ); document.write( "    - Binomial Theorem, Binomial Formula, Binomial Coefficients and Binomial Expansion, Problem 1\r
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