School level

# Expressions

UCD Maths Support Centre in conjunction with the UCD Access Support Centre created the following collection of resources for Leaving Certificate Mathematics students. The videos and accompanying PDF were designed for both the Higher and Ordinary Level Mathematics course.

This collection focuses on the Leaving Certificate Mathematics Strand 4: Algebra.

## Evaluating and Simplifying

Designed for OL   &   HL students.
Learn how to find the value of expressions by substituting real numbers for the letters or variables in the expressions, and to simplify algebraic expressions.

Designed for OL   &   HL students.
Learn how to remove brackets from an expression and to simplify an expression by adding like terms.

## Factorisation

Designed for OL   &   HL students.
Learn how to factorise expressions in the form ax+ bx  and the difference between two squares using these sample questions and the guidance in how to answer these questions.

## Multiplying and Dividing

Designed for OL   &   HL students. (Video two and three is for HL students only)
Learn how to multiply expressions, and how to multiply and divide by factoring using these sample questions.

## Rearranging and Surds

Designed for OL   &   HL students. (Video two is for HL students only)
Learn how to rearrange a formula by making a certain variable the subject of a given formula. The second video on surds looks at how you can solve an equation involving surds. This video is designed for the higher level Mathematics course.

## The Binomial Theorem

Designed for HL students only.
The binomial theorem describes the algebraic expansion of powers of a binomial expression. These videos demonstrate how you can quickly expand a binomial expression that has been raised to some large or inconvenient power.

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