exam Maths Puzzle Numerical Ability

simplify the rational expression

x2 - 6x + 8
-------------
x2 - 4

please help I need one good example to make sure I am doing this right.

Read Solution (Total 0)

exam Other Question

I have theta = x.
How do I find the exact value of sin2x when x is an acute angle with cosx = 3/5.
Steve traveled 600 miles at a certain speed. Had he gone 20mph faster, the trip would have taken 1 hour less. Find the speed of his vehicle.

*note* I really would like some help as to how to setup this question. Thank you!