factoring is a simple concept to understand and using perfect squares, if anything, makes it even easier because as long as you are familiar with square roots, finding the difference of squares is very easy to do.

In the case of question d) you are given 36p and 25q, the first step is to figure out the square root of each number, in this case it is 6p and 5q. Now the only thing you need to do is separate the expression into two sets of brackets as shown in the image above. If you were to FOIL this expression you would receive the original expression.