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B) [ (2-3)²+(-1)⁵]²= [ ( -1)² - 1 ]² = 0² = 0
C) [(-1)⁵-(-1)⁴]³= ( -1 - 1 )³ = ( -2 )³ = -8
D) (2-3)³-54:(-3)²= (-1)³ - 54 : (-9) = -1 + 6 = 5