Question

(5+√5) (5-√5 ) on simplification gives
1 point
a)20
b)2√5
c)10
d)25​

Answer 1

Answer:

a) 20

√5=2.2360

(5+2.2360)=7.236

(5-2.2360)=2.764

((7.236)(2.764))=20

Answer 2

Answer:

Answer a) 20

Step-by-step explanation:

(5+√5) (5-√5 )

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

5^2 - √5 ^2

25 - 5

20

i.e the answer is 20