Question

. If x + 1 = 5 , x2 + 1/x2 = ? x4+ 1/x4 = ?​

Answer 1

Answer:

Given,

x + 1 = 5 ==> x= 4

let's substitute x value in the 2 equation:

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

==>4 ^2 +1/4^2

==>16+1/16

==>16.0625

let's substitute x value in the 3 rd equation:

==> x^4 + 1/ x^4

===> 256 +1/256

===> 256.00390625