Question

( 5 + root 5 )( 5 -root 5)​

Answer 1

Answer:

20

Step-by-step explanation:

refer in attachment

hope it helps u

Answer 2

Step-by-step explanation:

(5+root 5)(5-root5)

(a+b)(a-b)=(a)2-(b)2

(5)2-(root5)2

25-5

20