Question

If ‘x’ is a positive real number and x² = 2, then the value of x³ is 

A) 2√2

B)3√2 

C) 4  

D)√2

Answer 1

Correct option is (A) 2√2

\(x^2=2\)

\(\Rightarrow\) x = \(\sqrt2\)

\(\therefore\) \(x^3\) = \((\sqrt2)^3\) = \((\sqrt2)^2\sqrt2\) = \(2\sqrt{2}\)

Answer 2

Correct option is  A) 2√2