Question

If ( x - 1 ) = -1 , find the value of x2 + 1/ x2

Answer 1

Answer:given (x-1)=-1.....................(1)

To find value of x^2+1/(x^2)

Step-by-step explanation:

Squaring both sides of (1), we get

(x-1)^2=(-1)^2

Or, x^2-2x+1=1

Or,x^2=2x

Therefore,X=2

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

= 4+(1/4)=17/4=4.25