-5 i 7/9 * 6 i 3/4 - (-7 i 1/3) * (-49) =
0,75 do potęgi drugiej - 5/6 - 1/2 =
2/3 - 5/7 - (1 i 1/3)do potęgi drugiej =
Daję naj ;)
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-5 i 7/9 * 6 i 3/4 - (-7 i 1/3) * (-49) =-52/9* 27/4-22/3*49=-39-1078/3= -398 1/3
0,75²-5/6-1/2 = 5625/10000-5/6-3/6=5625/10000-8/6= (33750-80000)/60000= -46250/60000=185/240=37/48
2/3 - 5/7 - (1 i 1/3)² = 14/21-15/21-(4/3)²=-1/21-16/9= (-9-336)/189 = -345/189 = -1 156/189 = -1 52/63