Question

IFX-1/X=3 , FIND THE VALUE OF X2 + 1/X2

Answer 1

Answer:

Step-by-step explanation:

as

x-1/x=3

so

by squaring

we have

(x-1/x)²=(3)²=

x² +1/x² -2=9     (-2(x)(1/x)) x and 1/x are cancelled as they are reciprocal

so

x² +1/x²=9+2=11