Skip to main content

Equation solving

Not sure what a linear equation is? Don't know where to start with quadratic or simultaneous equations? The links on this page will take you to resources that will help to fill any gaps in your knowledge.

  • ES1 Linear equations
    Equations with one variable may be solved using transposition skills to make the variable the subject of the equation.
  • ES2 Simultaneous equations
    Two equations in two variables are said to be simultaneous if both must be considered at the same time.
  • ES3 Quadratic equations
    The general form of a quadratic equation is A X squared plus B X plus C equals zero where A is not equal to one.
  • ES4 Quadratic formula
    The solutions to any quadratic equation can be found by substituting the values a, b, c into the quadratic formula.
  • ES5 Cubic equations, polynomial long division
    One polynomial may be divided by another of lower degree by long division (similar to arithmetic long division).
  • ES6 Exponential equations
    Indicial (or exponential) equations have the form ax = b. If we can write b as a number with a base a and an index, then we can equate the indices to find x. If two equal numbers are written to the same base then the indices must be equal.