SOLUTION: Can someone help me with this problem: Solve s^2+2sp+p^2-16 The answer I have is s^2+ps+p^2-16, I know that cannot be correct, please help Thanks

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Question 461895: Can someone help me with this problem:
Solve s^2+2sp+p^2-16
The answer I have is s^2+ps+p^2-16, I know that cannot be correct, please help
Thanks
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
s%5E2%2B2sp%2Bp%5E2-16

%28s%2Bp%29%5E2-%284%29%5E2
use diference of two squares formula
%28s%2Bp%2B4%29%28s%2Bp-4%29