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2 answers:
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Answer:
11.
Take out 2x ( greatest common factor )
Factor
Don't forget about the 2x we took out earlier
Solution to 11:
12.
This is the difference of squares, so let's use the formula...
if, and
then, the Solution to 12 is:
13.
First of all, you must find the greatest common factor because there isn't anything else you can do.
Now you can see the difference of cubes...
so, the Solution to 13 is:
Answer:
The minimum number of words left to write is 215
Step-by-step explanation:
Let
w -----> the number of words left to write
we know that
The number of words left to write plus the words written so far must be greater than or equal to 500 words
remember that the word "at least" means "greater than or equal to"
Solve for w
Subtract 285 both sides
The minimum number of words left to write is 215