Răspuns:
c) (5/10)³ × 2³
= (5/10 × 2)³
= (1/2 × 2)³
= 1³ = 1 .
d) (0,25)⁴ × 4⁴
= (0,25 × 4)⁴
= 1⁴
= 1 .
e) (12/100)¹⁴⁹ × (8 1/3)¹⁴⁹
= (12/100 × 8 1/3)¹⁴⁹
= (12/100 × 25/3)¹⁴⁹
= (4/100 × 25)¹⁴⁹
= (4/4)¹⁴⁹
= 1¹⁴⁹
= 1 .
f) (8 1/3)⁴ × (24/10)⁴
= (8 1/3 × 24/10)⁴
= (25/3 × 24/10)⁴
= (25 × 8/10)⁴
= (5 × 8/2)⁴
= (5 × 2)⁴
= 20⁴
= 160 000
