Hi, I would like your help in proving the following:
Your help is much appreciated.
Sorry it has been a while since I have done any proper maths. Could you provide the solution please?
then rearrange to the form I gave in my hint.
Not that difficult, I hope?
Or perhaps we can use the discriminant >= 0, by solving the quadratic in x?
"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."