# Leaving Cert Algebra and Equations Revision Videos

How to solve quadratic equations.

How to factorise using the Difference of Two Squares.

How to solve a quadratic equation using the Difference of Two Squares.

How to solve a quadratic equation using the guide number method.

How to solve a quadratic equation using the quadratic formula (minus b formula)

How to square out brackets easily, "square the first, twice the product, square the second"

How to solve simultaneous equations in two variables (two equations two unknowns)

How to add algebraic fractions.

How to divide algebraic fractions.

How to solve linear inequalities.

Why do we change the direction of the inequality sign when we multiply or divide by a negative?

How to solve equations with fractions.

Long division in algebra, step by step.

How to solve polynomials with unknown coefficients.

How to solve simultaneous equations in three variables, three equations with three unknowns.

How to solve surd equations with two surds or two radicals.

What is the factor theorem and how to use it.

How to factorise using the sum of two cubes.

How to do the sum and difference of two cubes.

How to factorise using the difference of two cubes.

How to find the points of intersection of a line and a circle using algebra.

How to solve surd equations when you end up with a quadratic equation.