Question

Oblicz

a)(⅕)⁻¹+(⅕)⁻²

b)(⅓-½)⁻¹

c)(⅓-⅕)⁻³÷(⅕+⅓)⁻³

Answer 1

a)(⅕)⁻¹+(⅕)⁻²=6+36=42  

b)(⅓-½)⁻¹=(2/6-3/6)^-1=(-1/6)^-1=-6

c)(⅓-⅕)⁻³÷(⅕+⅓)⁻³=(2/6-1/6)^-3:(1/6+2/6)^-3=216:8=27

Answer 2

/-ułamek  :podzielć   *razy

a)-1/5 do-3=-1/125

b)(2/6-3/6)do -1=-1/6do-1=1/6

C)(5/15-3/15)do-3:(3/15+5/15)do-3=2/15do-3:8/15=2/15*15/8=30/120=1/40

 

 

Answer 3

a)(⅕)⁻¹+(⅕)⁻²=5+25=30

b)(⅓-½)⁻¹=(2/6-3/6)⁻¹=(-1/6)⁻¹=-6

c)(⅓-⅕)⁻³÷(⅕+⅓)⁻³=((5/15-3/15):(3/15+5/15))⁻³=(2/15 : 8/15)⁻³=(2/15 * 15*8)⁻³= (1/4)⁻³=4³=64