Simplify rational functions Precalculus

Simplify the expression of the following rational functions.

g\left(x\right)=\dfrac{x-3}{x^2-9}

g\left(x\right)=\dfrac{1}{x+3}

g\left(x\right)=\dfrac{1}{x-3}

g\left(x\right)=\dfrac{x-1}{x-3}

g\left(x\right)=x+3

g\left(x\right)=\dfrac{x^2-1}{\left(x+1\right)^2}

g\left(x\right)=\dfrac{x-1}{x+1}

g\left(x\right)=\dfrac{x+1}{x-1}

g\left(x\right)=\dfrac{x}{x+1}

g\left(x\right)=\dfrac{x-1}{x}

g\left(x\right)=\dfrac{x^2-4x+4}{x^2-4}

g\left(x\right)=\dfrac{x-2}{x+2}

g\left(x\right)=\dfrac{x+2}{x-2}

g\left(x\right)=\dfrac{1}{x-2}

g\left(x\right)=\dfrac{4x}{x-2}

g\left(x\right)=\dfrac{x-1}{x^3-x}

g\left(x\right)= \dfrac{1}{x\left(x-1\right)}

g\left(x\right)= \dfrac{1}{x\left(x+1\right)}

g\left(x\right)=\dfrac{x-1}{x+1}

g\left(x\right)=\dfrac{x+1}{x-1}

g\left(x\right)=\dfrac{x^4-x^3}{x^5-x^4}

g\left(x\right)=\dfrac{1}{x}

g\left(x\right)=\dfrac{x^4-1}{x^5-1}

g\left(x\right)=\dfrac{x-1}{x^2-1}

g\left(x\right)=\dfrac{1}{x^2}

g\left(x\right)=\dfrac{x^5-x^3}{x^3\left(x-1\right)^2}

g\left(x\right)=\dfrac{x+1}{x-1}

g\left(x\right)=\dfrac{x-1}{x+1}

g\left(x\right)=\dfrac{x^2}{x-1}

g\left(x\right)= \dfrac{x^5}{x-1}

g\left(x\right)=\dfrac{x^3-1}{x^2-1}

g\left(x\right)=\dfrac{x^2+x+1}{x+1}

g\left(x\right)=x+1

g\left(x\right)=\dfrac{\left(x+1\right)^2}{x-1}

g\left(x\right)=\dfrac{x^2-x+1}{x+1}