Simplifying algebraic fractions and restrictions

Topic Notes
A rational expression is a fraction that its numerator and/or denominator are polynomials. In this lesson, we will first learn how to find the non-permissible values of the variable in a rational expression. Then, we will how to simplify rational expressions.
\cdot multiplication rule: xaxb=xa+bx^a \cdot x^b=x^{a+b}

\cdot division rule: xaxb=xab\frac{x^a}{x^b}=x^{a-b}
Basic Concepts
Related Concepts