Square Root: If x2 = y, we say that the square root of y is x and we write, √y = x.
Thus, √4 = 2, √9 = 3, √196 = 14.
Cube Root: The cube root of a given number x is the number whose cube is x. We denote the cube root of x by 3√x.
Thus, ∛8 = ∛2 x 2 x 2 = 2, ∛343 = ∛7 x 7 x 7 = 7 etc.
Note:
1.√xy = √x X √y 2. √(x/y) = √x / √y = (√x / √y) X (√y / √y) = √xy / y
Question 1
Q1. A group of students decided to collect as many paise from each member of group as is the number of members. If the total collection amounts to Rs. 59.29, the number of the member is the group is:
