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mfgoode · 2007-07-08, 16:16

Show that (x^5)/5 + (x^3)/3 +(7x/15) is always an integer for integral values of x ?

Its easy if you know the method.

Similar problems are welcome.

Mally

2007-07-08, 16:16	#1
mfgoode Bronze Medalist Jan 2004 Mumbai,India 2²×3³×19 Posts	Always an integer. Show that (x^5)/5 + (x^3)/3 +(7x/15) is always an integer for integral values of x ? Its easy if you know the method. Similar problems are welcome. Mally