Question

c) a2-4a - 1-0. Find the values of a-1/a​

Answer 1

Answer:

4

Step-by-step explanation:

a^2 -4a -1 = 0

4a = a^2 - 1 { 1 }

a - 1/a = {a^2 -1 }/ a

= 4a / a = 4 from { 1 }