Oblicz : 1. (4/7)^-2 - (7/4)^-1 2. (3^12x 3^-14):3^-4 np. ^-2 to jest -2 do potęgi Daje najj :P
a)
(4/7)⁻²- (7/4)⁻¹=(7/4)²-(4/7)¹=49/16-4/7=343/112-64/112=279/112=2 całe i 55/112
b)
(3¹²*3⁻¹⁴):3⁻⁴=3⁻²:3⁻⁴=3²=9
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a)
(4/7)⁻²- (7/4)⁻¹=(7/4)²-(4/7)¹=49/16-4/7=343/112-64/112=279/112=2 całe i 55/112
b)
(3¹²*3⁻¹⁴):3⁻⁴=3⁻²:3⁻⁴=3²=9