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b) -(-1/2)³ + (-0,4)³ : (1 1/5)² * 2 13/16 = 1/8 - 64/100 : 144/100 * 45/16 = 1/8 - 64/100 * 100/144 * 45/16 = 1/8 - 180/144 = 18/144 - 180/144 = - 162/144 = -1 i 18/144
c) -[-(-0,75)² + (1 1/4)²] - 4* (-1/2)⁴ = -[-(-3/4)² + (5/4)²] - 4 * (-1/2)⁴ = -[-2/3 + 25/16] - 4 * 1/16 = 2/3 - 25/16 - 4/16 = 32/48 - 75/48 - 12/48 = - 55/48 = - 1 i 7/48
powinno być dobrze ale za błędy z góry przepraszam;)) pzdr