Parsing algebraic expressions is always a pain. If you need to compute, say, 2+4*2, the answer should be the same as ... The second parse returns a full expression to produce: (2+(4*2)).

Save guides, add subjects and pick up where you left off with your BBC account. Substitution is the name given to the process of swapping an algebraic letter for its value. Consider the expression ...

Higher Maths Algebraic and trigonometric skills learning resources for adults, children, ... Complete the square to find turning points and find expression for composite functions.