5. Oblicz wartości wyrażeń:
i) (-0,1)⁴ x 20³ - (-2)⁴
j) (1½)³ : 0,5⁴ + 7,4°
k) 3³ - (-2)² - (-3)°
l) (⅗)² - ⅗² + ⅗₂
i)
(-0,1)⁴ x 20³ - (-2)⁴ = 0,0001 x 8000 - 16 = 0,8 - 16 = - 15,2
j)
(1½)³ : 0,5⁴ + 7,4° = 1,5³ : 0,0625 + 1 = 3,375 : 0,0625 + 1 = 54 + 1 = 55
k)
3³ - (-2)² - (-3)° = 27 - 4 + 1 = 23 + 1 = 24
l)
(3/5)² - 3²/5 + 3/5² = 9/25 - 9/5 + 3/25 = 12/25 - 45/25 = - 33/25 = - 1,32
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i)
(-0,1)⁴ x 20³ - (-2)⁴ = 0,0001 x 8000 - 16 = 0,8 - 16 = - 15,2
j)
(1½)³ : 0,5⁴ + 7,4° = 1,5³ : 0,0625 + 1 = 3,375 : 0,0625 + 1 = 54 + 1 = 55
k)
3³ - (-2)² - (-3)° = 27 - 4 + 1 = 23 + 1 = 24
l)
(3/5)² - 3²/5 + 3/5² = 9/25 - 9/5 + 3/25 = 12/25 - 45/25 = - 33/25 = - 1,32