I wasn't sure where to post this thread, but I hope it is the correct place
It's about perpendicular vectors. I apologise if the question seems a bit messy, as I don't know how to use Latex, but I have tried to do my best.
The question is:
The vectors 2x and x+1 are perpendicular for two values of x.
a) Write down the quadratic equation which the two values of x must satisfy.
b) Find the two values of x.
I would appreciate your help,