Math!
posted by megan .
Factoring Completely!
13b^213
I got
(13b13)(1b1).
On my test my teacher said it was party wrong.And she underlined the two Thirteen's i had in my answer.
And i don't understand why!?
_______________________________________
Also on another one.The problem is..
2d^2+3d2
I got
(2d+2)(1d+1)
But she crossed out the numbers two and one, on my paper.And i don't understand Why?
Please if you could HELP ME!
i would be very greatful!
thanx
Factor completely means complete. You can factor 13 out...
13(b1)(b+1)
if you multiply out what you put in parenthisis, it wont be equal to the original. Notice the  sign on the last term.
Try
(2d1)(d+2)
what is any number to a negative power equal to?
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