Question

3√512+√81-3√27=com. Se resolve?

Answer 1

∛512  +  √81  - ∛27 = 
  8   +   9   - 3 =
     17 - 3 = 14

512|2
256|2
128|2
 64 |2
  32|2
   16|2
     8|2
     4|2
     2|2
     1
512 = 2^9 = 2³ . 2³.2³
∛512 = ∛2³.2³.2³  = 2.2.2 = 8

81|3
27|3
  9|3
   3|3
   1
81 = 3².3³
√3².3³ = 3.3 = 9

27|3
 9|3
 3|3
  1
27 = 3³
∛27 = ∛3³ = 3