In earlier previous grades we learned to solve and simplify rational and irrational expressions and equations. A lot of people panic when they see expressions that include fractions, myself included. But it doesn’t need to be hard.

First, vocabulary learned in previous years.

• Denominator
• Numerator
• Multiplying the reciprocal
• Simplifying
• Equivalent expressions
• Factoring

All this vocabulary and concepts are still useful. But now we are including fractions!

By now we have learned how to factor expressions, if not remember

Common

Difference of squares

Pattern

Easy

Ugly

Example;

There is a new concept that relates to previous a pre-calculus unit similar to restrictions, known as non-permissible values. Non-permissible are basically x values that make the expression untrue or make it equal to nothing. If you did 6/0, you wouldn’t get an answer