Question

if n is a positive integer greater than 1 and 'a'is a positive rational number but not nth power of any rational number than n√a or a^-n is called ______​

Answer 1

Step-by-step explanation:

We know that product of two rational number is always a rational number.

Hence if a is a rational number then

a2 = a x a is a rational number.

a3 = a2 x a is a rational number,

a4 = a3x a is a rational number

∴ an = an-1 x a is a rational number.

I think

Answer 2

Answer: It's called radical as well as surd