"Your answer" to what? What did the instructions tell you to do?X-7, 3x-21, 6x
My answer was 3, x-7, 6x
If the instructions said to get the factors for the LCD then this answer is right. You can see why here (the last bit of the lesson shows polys; the first part shows how to do it with numbers).Correct answer per the book is 6x, x-7.
What factors did you get? How did you get 3 NOT being a factor of 6?What happened to the 3?
Okay. Now, after you've read the lesson in the link and factored the 6 in the 6x, what are you getting?The instructions were to find the LCD of the three. I factored as follows:
X-7 = x-7
3x-21 = 3(x-7)
Therefore my answer was x-7, 3 and 6x.