Question

1).(2+√2)(2-√2) classify the following numbers as rational or irrational. justify your answer.​
explain

Answer 1

Answer:

(2+√2)(2-√2) is a rational number.

value of

(2+√2)(2-√2)

=(2)^2-(√2)^2

=4-2

=2

2 is rational ,so (2+√2)(2-√2)is rational