La raíz cuadrada se calcula mediante el método de división larga. Puedes ver los ejemplos en el sitio web de G oo g l e.
Answer:
4 flowers
Step-by-step explanation:
Number of flowers planted: 
Jack has 9 flowers that he needs to plant. We need to subtract 5 from 9 to find out how many flowers he still needs to plant.

Jack has 4 more flowers left to plant.
The first thing to take into account is that the probability of getting any of the six numbers of the dice after rolling it is the same and that probability is 1/6. Here we are being asked about the probability of getting a 1 or a 4 or a 5. In order to find it we need to define which are our favourable cases. Favourable cases are the results we want to get when we roll the dice so getting a 1, a 4 or a 5 are all favourable cases. All the other possible outcomes are unfovourable cases: getting a 2, a 3 or a 6. So we have 3 favourable and 3 unfavourable cases. Adding them we know that the total amount of cases is 6. The probability we are looking for (i'm going to call it P) is given by these quantities I defined:

So the probability written as a simplified fraction is 1/2.