Ok, I have the answer to your question. I'll show it to you in each step.
NOTE: x^2 is x-squared.
from x^2 + 8x - 5 = 0 seperate the things with x in them
---> (x^2 + 8x) = 5 (I also moved the 5 to the other side of the equation.)
I forget why you need to do this next step, I just know what to do.
Divide the 8 (of 8x) by 2 and then square it.. so you get:
(x^2 + 8x +16)= 5
But you also need to put the 16 on the other side of the equation. so:
(x^2 + 8x +16) = (5+ 16) ---> (x^2 + 8x +16) = 21
Now simplify the equation:
(x+4)^2=21
Now you need to square root the entire equation:
x + 4 = +21 (if you need to know why 21 is + just ask)
leaving you to simply subtract 4 from either 21 or (-21)
:mrgreen:
