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Articles Home » CRT » 05 SQUARE ROOTS AND CUBE ROOTS

05 SQUARE ROOTS AND CUBE ROOTS

IMPORTANT FACTS AND FORMULAE

 

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, 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 

· Posted by Superadmin on September 08 2016 · 0 Comments · 815 Reads · Print

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