An equation is a mathematical expression that contains an equals symbol. Equations often contain algebra. Algebra is used in Maths when we do not know the exact number in a calculation - this ...

Substituting numbers into an expression When you know the value for letters in an algebraic expression you can substitute these values into the expression and solve it. Solve linear equations An ...

A polynomial is a type of algebraic equation that involves variables raised to a non-negative power — for example, x² + 5x + ...