Indices show where a number has been multiplied by itself, eg squared or cubed, or to show roots of numbers, eg square root. Check your understanding of the process with this National 5 Maths quiz.

expression let's say we have four times the quantity x minus y whatever X and Y are and then plus one and then I'm going to give you as a kind of like part of the problem that X is equal to negative 2 ...

Let's look at two different methods for expanding double brackets. Question 1 asks you to expand the brackets 2𝑥 add 8 multiplied by 𝑥 subtract 3. Let's use the grid method for this one. In a grid ...

CA Algebra I: Simplifying Expressions Topics Salman Khan, Khan Academy Item Size 23.7M 8-13, simplifying expressions and word problems ...