Question

x^2+1/x^2 and x^4 + 1/x^4 if x+1/x =3​

Answer 1

Answer:

7 and 47

Step-by-step explanation:

Given, x+(1/x)=3

Squaring on both sides,

x²+(1/x²)+2=9

So, x²+(1/x²)=9-2=7

Again, squaring on both sides,

x⁴+(1/x⁴)+2=49

x⁴+(1/x⁴)=47