Question

state whether the number root2-root3 root2+root3 is rational or irrational

Answer 1

Hii friend,

=> (✓2-✓3)(✓2+✓3)

(a+b)(a-b) = a²-b².

=> (✓2)² - (✓3)²

=> 2-3 = -1 = -1/1 which is rational.

HOPE IT WILL HELP YOU.... :-)

Answer 2

(√2 -√3) (√2 + √3)
====================
By Formula,
(a - b)(a + b) = (a)² - (b)²
====================

Here,

⇒(√2 - √3) (√2 + √3)

⇒(√2)² - (√3)²

⇒2 - 3 

⇒-1 

-1 is rational number



i hope this will help you


-by ABHAY