Question

1. Simplify the following expressions.
ii)
(5+ √5) (5-√5)
i)
(5+√7) (2 + √5)
iii) (13 + 17)
iv)
(V11 7) (V11+57) please answer it's urgent ​

Answer 1

Explanation:

Refer the attachment

hope it helps

Answer 2

Answer:

= (5+√5) (5-√5)

= Using identity (a+b) (a-b) =a^2-b^2

=5^2-√5^2

=25-5

=20