Question

Solve the equation by completing the square:

a^2 - 2a -8=0

Answer 1

complete the square by first adding 8 to both sides.

Then divide the -2 by 2 and square it. You should get 1, and add that 1 to both sides.

Answer 2

you should now have \[a ^{2}-2a+1=9\]

Answer 3

Y divide -2?? Ok so, this is where I got. You lost me after this: