Question

(ii) (2+ root5)^5+(2-root5)^5 find the value of ​

Answer 1

Answer:

Step-by-step explanation:

(2+√5)5 Very simple first multiply 5 with 2 and 5 with √5

U get

10+5√5

Next do same with 2-√5

U get

10-5√5

Now add

10+5√5 and 10-5√5

5√5 and -5√5 gets cancelled

So it is 10+10 left

U get

20

That is your answer

I hope u like it

Please mark it as brainliest