Question

x-1/x=13 then value of 171x^2-x^4​

Answer 1

Answer:

85/72

Step-by-step explanation:

x-1/x=13

x-1=13x

12x=-1

x=-1/12

put the value of x in above equation

171(-1/12)^2 - (-1/12)^4

171(1/144) - (1/20736)

(171 - 1)/144

85/72 = 1.1805