Then the original price was $42
Because it is half off we multiply 21 by 2 and get 42.
Length: 6 Width: 2 Area: 12
(2, -1), (6,- 4), and (6, -1). Hope this helps man!
For this case we must factor the following expression:
We rewrite the middle term as a sum of two terms whose product is
And whose sum is
These numbers are:
-5 and -3
So:
We factor the maximum common denominator of each group:
We take common factor
Answer: