Question

on simplifying (5+√5) (5-√5) we get a) 20 b) 25 c) 2√5 d) 10​

Answer 1

Answer:

hello

Step-by-step explanation:

see solution: -

$(5 + \sqrt{5} )(5 - \sqrt{5} ) \\ (5) {}^{2} - ( \sqrt{5}) {}^{2} \\ 25 - 5 \\ 20$

this is the correct answer for------> 20

20 is the correct answer☺❤

marks the brainlist☺

Answer 2

a)

= (5)^2- (√5)^2

= 25 - 5

= 20