Question

if a²-1/a=4 , find the value of 2a³+2/a³
please give the solution
the answer for this is 104​

Answer 1

Step-by-step explanation:

a^2-1=4a

a^2=4a+1

a=√4a+1

substitute a value in polynomial

2(√4a+1)^3+2/(√4a+1)^3

solve it you find answer