Question

(2+√2)(2-√2) is rational number? with explanation​

Answer 1

Answer:

I have attached a pic of your answer.

hope this helps

I have multiplied the first bracket with second bracket and solve it.

and I get it 2 at last.

which is a rational number.

Answer 2

Answer:

(2+√2)(2-√2)= 2^2-√2^2=4-2=2

2 is a rational number because it can be written as p/q.