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 ...

A quick run down on how you can use regular expressions in your own programs to give you more power over searching and substituting text. Perl has long been an extremely popular choice for text ...