Question

Simplfy: (3 - √11) (3 + √11)

Answer 1

Answer:

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

Step-by-step explanation:

Answer 2

Answer:

$(3 - \sqrt{11} )(3 + \sqrt{11} ) \\ apply \: (x - y)(x + y) = x {}^{2} - y {}^{2} \\ = 3 {}^{2} - ( \sqrt{11} ) {}^{2} \\ = 9 - 11 = - 2 \: \: ans\\ \\ hint: \: ( \sqrt{n}) {}^{2} = n$

Jai Hind ❤️.