Question

How to solve equation of x^4+1/x^4=727,then find out x-1/x=?

Answer 1

x⁴ + 1/ x⁴ = 727

Find x - 1/x?

⇒x⁴ + 1= 727.x⁴

1 = (727 - 1). x⁴

1/726 = x⁴

x≈ 5

∴ x - 1 /x = 4/5

=0.8

I guess this is the procedure not so sure about the answer!!