Question

Find the domain and range of the function $\frac{x^2-4}{x-2}$

Answer 1

$\frac{x^2-4}{x-2}$

$=\frac{(x+2)(x-2)}{x-2}$

$=x+2$

Domain of (x+2) is $(-\infty ,\infty )$

Range of (x+2) is $(-\infty ,\infty )$