Question

State weather the number (root2-root3)(root2+root 3)is rational or irrational . justify

Answer 1

(√2 - √3)(√2 + √3) = √2² - √3² = 2-3 = -1 which is a rational no. 
and that's why, (√2 - √3)(√2 + √3) is a rational no. 

Answer 2

Answer:

Step-by-step explanation:

(√2 - √3)(√2 + √3)

= √2² - √3²

= 2-3 =-1.

we have -1 which is a rational no.

and that's why, (√2 - √3)(√2 + √3) is a rational number.

HOPE THIS HELP YOU

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