Description
1) [4 points] Prove that 9 | (4#$ + 8) for every integer π β₯ 0.
2) [4 points] Prove that β (8π β 5) $
/01 = 4π3 β π for every positive integer n.
3) [4 points] Prove that 13 + 23 + 33 + 43 + β― + π3 = $($91)(3$91)
: for every positive
integer n.