SOLUTION: Hello. I'm not sure with one of my answer on my homework. Please check if it is right or wrong : here it is: [{{{(k-1)+k^2}}}] [{{{(k-1)-k^2}}}] thank you in advance for t

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Hello. I'm not sure with one of my answer on my homework. Please check if it is right or wrong : here it is: [{{{(k-1)+k^2}}}] [{{{(k-1)-k^2}}}] thank you in advance for t      Log On


   

Question 818742: Hello. I'm not sure with one of my answer on my homework. Please check if it is right or wrong : here it is:
[%28k-1%29%2Bk%5E2] [%28k-1%29-k%5E2]
thank you in advance for those who will answer it.
and thank you to tutor jhunjiro(10) and jsmallt9(3468) who answered my question last night. :)
Answer by jhunjiro(67) About Me  (Show Source):
You can put this solution on YOUR website!
Solution:
[%28k-1%29%2Bk%5E2] [%28k-1%29-k%5E2]
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=%28k-1%29%28k-1%29%2Bk%5E2%28k-1%29-k%5E2%28k-1%29-k%5E2%28k%5E2%29%29
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=%28k-1%29%5E2-k%5E4%29
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=%28k%5E2-2k%2B1%29-k%5E4%29