(³√√8)²=(⁶√8)²=8dopotegi2/6=8 do potegi 1/3=³√8=2
√³√9 × ³√9 =⁶√9x³√9=9do pot 1/6 x 9 do pot 1/3=9 do pot (1/6+2/6)=9 do pot 3/6= 9 do pot 1/2=√9=3
7√7 × ⁴√7 / ⁴√7³ =7 razy 7 do pot 1/2 razy 7 do pot 1/4 podzielic ⁴√7³
7 do pot (1+1/2+1/4) podzielic na ⁴√7³=7 do pot (4/4 + 2/4 +1 /4) podzielic na ⁴√7³= 7 do pot 7/4 podzielic na ⁴√7³ = 7 do pot 7/4 podzielic na 7 do pot 3/4=
7 do pot (7/4 - 3/4) =7 do pot 4/4=7
