Question

quanto é V48 - v12 + v75

Answer 1

sqrt(48) = sqrt(2.2.2.2.3) = sqrt(2^2.2^2.3) = 2.2sqrt(3) = 4sqrt(3)

sqrt(12) = sqrt(2.2.3) = sqrt(2^2.3) = 2sqrt (3)

sqrt(75) = sqrt(3.25) = sqrt(3.5.5) = sqrt(5^2.3) = 5sqrt(3)

Portanto:
4sqrt(3) - 2sqrt(3) + 5sqrt(3) =
7sqrt(3)

Obs.: Sqrt significa Raiz quadrada.