Important Facts And Formulas Of Square Roots And Cube Roots

Posted by Rahul

28 Jan, 2012

Square Root: If x^{2} = 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, 3√8 = 3√2 x 2 x 2 = 2, 3√343 = 3√7 x 7 x 7 = 7 etc. Note:
1.√xy = √x * √y
2. √(x/y) = √x / √y = (√x / √y) * (√y / √y) = √xy / y

Ad Blocker Detected

We have noticed that you have an ad blocker enabled which restricts ads served on the site.
Please disable it to continue using Downloadmela.

Square Root:If x^{2}= 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, 3√8 = 3√2 x 2 x 2 = 2, 3√343 = 3√7 x 7 x 7 = 7 etc.

Note:1.√xy = √x * √y

2. √(x/y) = √x / √y = (√x / √y) * (√y / √y) = √xy / y