Question

oblicz
a) (1/4)² - (-1/4)³
b) (2/5)² - 2²/5 + 2/5²
c) 100 × (-0,1)³ - 0,1 × 100³
d) 5² × 1/5 - (-1/5)⁰ × (-5)²

Answer 1

Odpowiedź:

a) (1/4)² - (-1/4)³

= 1/16 - (-1/64)

= 1/16 + 1/64

= 5/64

b) (2/5)² - 2²/5 + 2/5²

= 4/25 - 4/5 + 8/25

= (4+8-20)/25

= -8/25

c) 100 × (-0,1)³ - 0,1 × 100³

= 100 × (-0.001) - 1000

= -0.1 - 1000

= -1000.1

d) 5² × 1/5 - (-1/5)⁰ × (-5)²

= 5 - 1 × 25

= 5 - 25

= -20