Question

for all n>or =1 prove that 1^2+2^2+3^2+4^2+n^2=n (n+1)(2n+1)/6 please solve in copy and send
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Answer 1

Borland changed the name to Quattro Pro for its 1990 release. The common file extension of Quattro Pro spreadsheet file is . qpw, which it has used since version 9. Quattro Pro versions 7 and 8 used .

Answer 2

Answer:

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