Thread: Factoring guidelines needed

Since the original problem must be equivalent to the book answer, if I develop both sides, the final products have to be equivalent expressions. That’s the theory. As I haven’t been able to go from the original problem to the book answer, I decided to solve both sides to see were is my problem, but I can’t see what I’m doing wrong.

Originally Posted by Alienis Back

Since the original problem must be equivalent to the book answer, if I develop both sides, the final products have to be equivalent expressions. That’s the theory. As I haven’t been able to go from the original problem to the book answer, I decided to solve both sides to see were is my problem, but I can’t see what I’m doing wrong.

In all three questions the procedure is the same: The common factor of the summands is the sum in brackets:

If you factor out a term you have to divide each summand by this term.



The other 2 problems could be dome similarily(?).