Question

if x is a rational number, what can you say about x²? support your answer with examples

Answer 1

x^2 means that x is multiplied 2 times i.e. x into x =x^2

Answer 2

x is a rational number
x²= xx which is the product of two rational numbers
Since rational numbers are closed under multiplication so x² is also rational.

Let the rational no. x be = 4

Then x²= 4²= 16
which is rational.
hope this explanation will help you