IMPORTANT FACTS AND FORMULAE
Square Root: If a2 = b, we say that the square root of b is a and we write, √b = a.
Thus, √4 = 2, √9 = 3, √196 = 14.
Cube Root: The cube root of a given number a is the number whose cube is a. We denote the cube root of a by 3√a.
Thus, 3√8 = 3√2 x 2 x 2 = 2, 3√343 = 3√7 x 7 x 7 = 7 etc.
Note: 1.√ab = √a * √b
2. √(a/b) = √a / √b = (√a / √b) * (√b / √b) = √ab / b