Question

if x =(4+√5) 1/3 + (4-√15) 1/3 then show that x3-3x-8=0​

Answer 1

Answer:

it is simple

1st we simply the value of x.

it is given that the value of x =. (4+√5)*1/3 +

(4-√5)*1/

so, [(4+√5) + (4-√5)]

________________

3

(4+4+√5+√5)

____________

3

8+2√5

______

3

now the value of x is (8+2√5)/3

now put the value of x in this the equation u will find your answer.