Question

simplify (3-√11)(3+√11)

Answer 1

Dear Student ,

Given that ;-

$= > (3 - \sqrt{11} )(3 + \sqrt{11)}$

Using the Identity :-

➨ (a + b) (a - b) = a² - b²

$= > (3)^{2} - ( \sqrt{11} )^{2}$

$= > 9 - 11 = - 2$

Hence ,

Answer = -2

Answer 2

Answer:

Given :-

=  (3 - √11 )(3 + √11)

Using the Identity :-

## (a + b) (a - b) = a² - b²  ##

=  (3)^2  - (√11)^2

=  9 - 11

=  - 2

Answer = -2