Question

(3-root 5)×(3+root 5)
​

Answer 1

Answer:

3^2 - root 5^2

=> 9 + 5

=> 14

Answer 2

Answer:

4

Step-by-step explanation:

formula you can use is (a-b)(a+b) = (a^2 - b^2)

(3-root5)x(3+root5) = (3^2 - (root5)^2)

= (9-5)   [ square and root will be cancelled ]

=4

hope it helps

if wrong i'm sorry