Eduqas GCSE Mathematics key terms

Rewriting an expression as a product of factors; for example, $ax+bx=x(a+b)$.

Write an expression as a product of factors. This reverses expanding.

Rewriting an expression as a product of factors; for example, $x^2-7x+12=(x-3)(x-4)$.

Two integers whose product is a given number; for example, 3 and 6 are a factor pair of 18.

A trial or experiment in which each of the possible basic outcomes has an equal chance of occurring.

A sequence in which each term after the first two is the sum of the previous two terms.

The result of subtracting a sequence term from the term immediately after it.

An equation expressing a rule or relationship between quantities, usually represented by letters.

A number written as $\frac{a}{b}$, meaning $a$ divided by $b$, where $b\ne 0$. It can represent part of a whole or compare two quantities.

An index that represents a root, possibly raised to a power. For a positive base, $a^{m/n}=(\sqrt[n]{a})^m$.

A fraction comparing one quantity with the combined total. If $A:B=a:b$, then $A$ is $\frac{a}{a+b}$ of $A+B$.

The number of observations in a value or class.

Frequency divided by class width; it gives the height of a histogram bar.

A table listing categories or values alongside the number of times each occurs.

A branching diagram that divides a total count into groups and then divides those groups into smaller groups.

A two-dimensional view of a three-dimensional object, seen directly from its designated front.

The part of a cone or pyramid remaining after its top is cut off by a plane parallel to the base.

A mathematical rule that gives one output for each allowed input.

A sequence in which each term is obtained by multiplying the previous term by a fixed number.

A logical argument that establishes a geometric result from given information and mathematical properties, rather than from measurements or appearances.

The change in $y$ divided by the change in $x$ along a non-vertical straight line; it describes the line's steepness and direction.

Half a sphere, with a curved surface and a flat circular base.

The greatest whole number that divides each of two or more whole numbers exactly.

The largest positive integer that divides each of two or more numbers exactly.

A diagram of grouped numerical data in which each bar spans a class interval and its area represents the class frequency.

The side opposite the right angle in a right-angled triangle; it is the triangle’s longest side.

An equality that is true for every allowed value of its variables. The symbol $\equiv$ can be used to show an identity.

The shape or point produced by a transformation.