6次根号下4的平方×根号8÷根号12急需!!!!
急需!!!!
原式＝ (4^1/6)^2×8^1/2÷12^1/2 = 4^1/3×2^3/2÷(3×4)^1/2 = 2^2/3×2^3/2÷(3^1/2×2) = 2^(2/3+3/2-1)÷3^1/2 = 2^7/6÷3^1/2 = 2^7/6×3^(-1/2) 2^7/6表示2的7/6次方