SOLUTION: can someone please check my answers to: factor the sums or differences of two cubes m^3-n^3 MY ANSWER m^3-n^3=(m-n)(m^3+mn+n^3) c^3+f^3 MY ANSWER c^3+f^3=(c+f)(c^3-cf-f^3)

Question 37698This question is from textbook
: can someone please check my answers to: factor the sums or differences of two cubes
m^3-n^3
MY ANSWER m^3-n^3=(m-n)(m^3+mn+n^3)
c^3+f^3
MY ANSWER c^3+f^3=(c+f)(c^3-cf-f^3) This question is from textbook

Answer by Alwayscheerful(414) (Show Source): You can put this solution on YOUR website!
For the equation
You may have made a careless mistake in your answer.
If you expand the equation you gave, the first term would be because you have .
The correct answer is:

For the second equation
Your answer has a tiny common error.
You also made the same error as above.
The first part is correct.
You should know that whenever you square a negative number, it beccomes positive.
The correct answer is:

Hope this helps!