Question

solve the equation:x^2-1/x^2+1=4/5​

Answer 1

Answer:

x^2-1/x^2+1=4/5

=>(x^2-1)×5=(x^2+1)×4

=>5x^2-5=4x^2+4

=>5x^2-4x^2=4+5

=>x^2=9

=>x=3