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a) 3 * 4 + 5² = 12 + 25 = 37
b) 2 * 3² - 12 * 4 = 2 * 9 - 48 = 18 - 48 = -30
c) 2 * 5² - 3³ = 2 * 25 - 27 = 50 - 27 = 13
d) 5 * (3² - 2⁴) = 5 * (9 - 16) = 5 * (-7) = -35
e) 4² * 3 - 2 * 5³ = 16 * 3 - 2 * 125 = 48 - 250 = -202
f) (12 - 9)⁴ = 3⁴ = 81
g) (8 + 3)² = 11² = 121
h) (5 * 4)⁴ = 20⁴ = 160000
i) 12⁰ - 0¹² = 1 - 0 = 1
j) (-1)² + (-1)³ + (-1)⁴ = 1 - 1 + 1 = 1
4.
a) (-6)² - 5² = 36 - 25 = 9
b) (-2)² : 4² = 4 : 16 = ¹/₄
c) (-6)² : (-3)³ = 36 : (-27) = -1¹/₃
d) 4³ - 2 * (-5)² = 64 - 2 * 25 = 64 - 50 = 14
e) (-10)³ - 2 * (-15)² = -1000 - 2 * 225 = -1000 - 450 = -1450
f) -6² + (-5)² = -36 + 25 = -11
g) (-5)³ - (-3)³ = -125 - (-27) = -125 + 27 = -98
h) 12² : (-2)³ = 144 : (-8) = -18
i) 2 * (-3)³ - (-8)² = 2 * (-27) - 64 = -54 - 64 = -118
j) -14² + (-13)² = -196 + 169 = -27