Răspuns:
Explicație pas cu pas:
S = 56+55+54+....+5+4+3 = (56+3)·(56-3+1):2 =
= 59·52:2 = 59·26 = 1534
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xbz = numar minim impar => z = 1
xᵇ = 16 => x = 2 ; b = 4
x = 4 ; b = 2
___
xbz = 241
198407·48709 - 48709·98407 =
= 48709·(198407-98407) =
= 48709·100000 =
= 4870900000
#copaceibrainly
