Question

if x-1/X=3, then find the value of x²+1/x² and x³-1/x³
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Answer 1

Answer:

5 , 9

Step-by-step explanation:

At First,

x-1/x = 3

or, x-1= 3x

or,x= -1/2

Then,

x²+1/x²= (-1/2)² + 1/ (-1/2)²

=1/4 + 1/ 1/4

=5

Then,

x³-1/x³= (-1/2)³ - 1/ (-1/3)³

= (-1/8) - 1 / (-1/8)

= -1 -8/8 / -1/8

=9

Hope! this will help you