Question

If x-1/x
= 4 then evaluate x2+1/x2
and x4 + 1/x4​

Answer 1

Answer:

x - 1/x. =. 4

squaring both sides,we get;

x2 + 1/x2 + 2 = 4

thus ,x2 + 1/x2 = 2

. again squaring both sides,we get;

x4 + 1/x4 + 2 = 4

thus , x4 + 1/x4 = 2