Question

(2+√2)(2-√2) , Classify the given number as rational or irrational.

Answer 1

use identity (a+b) (a-b) =a²-b²
2²-√2²=4-2
2

Answer 2

HEYA!!
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(2 + √2 ) ( 2 - √2 )

Using identity ( A + B ) ( A - B ) = ( A^2 - B^2 )

( 2+√2) (2-√2) = ( 4 - 2 )

= 2


✔It is a Rational Number ..⭐⭐

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