Save guides, add subjects and pick up where you left off with your BBC account. As we cannot simplify what is within the bracket, we must instead use the distributive property of this expression ...

Invented by Leonardo Torres in 1920, the Torres calculating machine is a machine that solves essential addition, subtraction, ...

It seems logical because 1 times 10 does equal 10, but factorising isn’t just about multiplication ... video to understand out how to factorise quadratic expressions correctly to avoid losing ...

In quadratic planes, imaginary numbers show ... Knowledge of the exponential qualities of imaginary numbers is useful in the multiplication and division of imaginary numbers.