Simplify the following expression as far as possible:
(x - 4)² - 16
I don't understand how to solve this one. The answer is NOT x = 20
ANSWER HIDDEN ---> (x²-8x) <--- ANSWER HIDDEN
I have masked the answer in case someone wish to give it a try themselves before trying to help me
I tried the x² + px + q = 0 formula but that became not even near the answer.
Anyone that can describe this problem in a step by step fashion?
Note: I will get stuck again, and instead of making a new thread I will reuse this one. With the newest question ON TOP the older questions, marked with date to make it easy to see where the current problem ends.
This post has been edited by FrozenSnake: 10 May 2010 - 12:53 PM