Express 4x/(x^2-9)-2/(x+3) as a single fraction in its simplest form

4x/(x2-9)-2/(x+3) = 4x/((x+3)(x-3))-2/(x+3) = 4x/((x+3)(x-3))-2(x-3)/((x+3)(x-3)) = (4x-2(x-3))/((x+3)(x-3)) = (2x+6)/((x+3)(x-3) = (2(x+3))/((x+3)(x-3)) = 2/(x-3)

CS

Related Maths A Level answers

All answers ▸

Using the limit definition of the derivative, find the derivative of f(x)=sin(3x) at x=2π


What is integration?


Given f(x)=2x^3 - 2x^2 + 8x, find f'(x) and f"(x).


a curve is defined by y=2x^2 - 10x +7. point (3, -5) lies on this curve. find the equation of the normal to this curve