Hey all, one thing that i *suck* at is simplifying complicated boolean expressions. I'm nearly always certain that there's a much clearer and more condensed way to write things, but my brain locks ...

Collecting like terms means to simplify terms in expressions in which the variables are the same. In the expression \(5a + 2b + 3a - 6b\), the terms \(5a\) and \(+ 3a\) are like terms, as are \(2b\) ...

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.