# Pre-calculus background quick review

This is a "quick" review of selected Khan Academy lessons you must take if you fail the ABS pre-calculus exam. They should take 1-3 hours, depending on your skill level. You must take these before retaking the ABS exam. However, unlike the ABS exams, you **may** use a calculator on the quick review problems.

Arithmetic with polynomials - lesson 1, lesson 2, lesson 3

Rational expressions, equations, and functions - lesson 1, lesson 2, lesson 3

Trigonometric functions - lesson 1, lesson 2

Exponential and logarithmic functions - lesson 1, lesson 2, lesson 3

Solving equations involving square-roots - lesson 1

Composite functions - lesson 1

Those failing the ABS exam and, after this training, the retake are at risk of being placed into sm005.

## Resources

If you don't know these topics well enough, here are some references to help you review before taking the online exams.