# Rational Expressions

Putting it all together

For the following rational expressions:

1. Determine the domain of the expression.
2. Simplify the expression, if possible.
3. Evaluate the expression for the values given.
1. $$\dfrac{x^2+3x-4}{x^2-x-20}$$, evaluate for $$x=-3,\, 0, \, 3$$
2. $$\dfrac{x^2-25}{5x-x^2}$$, evaluate for $$x=1, \, 3, \, 4$$
3. $$\dfrac{x^2-16}{x^2-x-12}$$, evaluate for $$x=-4, \, 0, \, 3$$

Check solutions here.