x^2+7x+12 can be done by factoring as a process of ax^2+bx+c, whereas a is equal to 1.
First, we need to know 2 numbers that multiply to 12 and add to 7. In that case, that would be 6 and 2. And then finally write the variable x in the first parts of the parentheses, that would be: (x+6)(x+2).
