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b) = (3 + (-1))² = 4
c) = 3 × 3² - (-0,5) = 27,5
d) = 6 × 0,5 - 4 × (-0,5) + 2 × (-1) = 3
e) = 0,5 × (-0,5) - 3 × (-1) = 2,75