Question

There is a number x such that x² is irrational but x⁴ is rational.Then x,can be (1) a) √5 b) √2 c) 2⅓ d) 2¼

Answer 1

Answer:

d) 2^1/4

Step-by-step explanation:

x=2^1/4

x^2=(2^1/4)^2

=2^1/2

which is irrational

x^4=(2^1/4)^4

=2^1=2

which is rational