Question

if a2-5a+1=0,then a3+1/a3​

Answer 1

Step-by-step explanation:

2a-5a+1=0

-3a+1=0

-3a=-1

3a=1

a=1/3

a3+1/a3=3(1/3)+1/3(1/3)

=2/1

=2.