Question

if x+1/x=4,find the value of xpower4+1/xpower4

Answer 1

hope this answer will help you.

Answer 2

Answer:

194

Step-by-step explanation:

(x +  1/x)^2 = x^2 + 1/x^2  + 2

=>  16 - 2=x^2 + 1/x^2

=> x^2 + 1/x^2= 14.

now,

(x^2 + 1/x^2)^2 = x^4 + 1/x^4 +2

=>(14)^2 - 2 =x^4 + 1/x^4

=>196-2=194

therefore, x^4 + 1/x^4= 194

hope it helps :)