а) √5/√160 = 5^(1/5)/160^(1/5) = 5^(1/5)/2^(5*1/5) = 5^(1/5)/2 = √(5/32)
б) ∛9 375 = 3^(1/3) 375 = 3^(1/3) 3 125 = 3^(1/3) 3^(1) 5^3 = 3^(1/3+1) 5^3 = 3^(4/3) 5^3 = 3^4 5 = 81 5 = 405.
а) √5/√160 = 5^(1/5)/160^(1/5) = 5^(1/5)/2^(5*1/5) = 5^(1/5)/2 = √(5/32)
б) ∛9 375 = 3^(1/3) 375 = 3^(1/3) 3 125 = 3^(1/3) 3^(1) 5^3 = 3^(1/3+1) 5^3 = 3^(4/3) 5^3 = 3^4 5 = 81 5 = 405.