Question

1
9
.
If x>0; x+1/x^2=9/2 and x^2+1/x=9/4 then value of x^3+1/x= ?​

Answer 1

Answer:

17/8

Step-by-step explanation:

x^3 + 1 = 9/2 * x^2 .... 1

x^3 + 1 = 9/4 * x ........ 2

from 1 and 2

x=1/2