Sanical
SpiderAnderson
Are we allowed to use his mental method in exam, as in show no working at all?
For example, can you straight out say:
(x^2+4)}=\frac{1}{x-2}-\frac{x}{x^2+4})
If you were to show working, you'd have to sub in numbers and equate coefficients.
For example, can you straight out say:
If you were to show working, you'd have to sub in numbers and equate coefficients.