I am trying to work out some quadractic equations when I compare the my answer to the answer book it is wrong. I even typed in the exact example they gave me. My calculator screen is attached is it in the right settings?
So its my calculator as I worked out
on my calculator and it gave me the results in the image above. The settings on the caluclator are in my first post, im sure I have reset the settings by mistake. Looks like my method is fine though just the working out wich wasn't even done by me