Question

X square + 1/x square-11 . how to solve this​

Answer 1

Answer:

factorise x^2 + 1/x^2 - 11

Answer 2

x^2 + (1/x)^2 -11

x^2+1/x^2=11

x^4+1/x^2 =11

x^4+1=11x^2

x^4-11x^2= -1

x^2(x^2-11)=-1

x^2=-1

(x=-1)

x^2-11=-1

(x=√10)