I'm revising for an exam and am doing the exam review, but I keep getting 2/3 instead of 9/2 I'm not sure where I went wrong but any help would be much appreciated.
gleaming dirge
I'm revising for an exam and am doing the exam review, but I keep getting 2/3 instead of 9/2 I'm not sure where I went wrong but any help would be much appreciated.
mighty smeltBOT
frosty olive
?
wise flame
careful for signs?
you are adding the terms when you substitute $x=1$ and subtracting the terms when you substitute $x=-2$