SOLUTION: How do you simplify (s+2)^2-s^2?

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Question 1073673: How do you simplify (s+2)^2-s^2?
Answer by ikleyn(52794) About Me  (Show Source):
You can put this solution on YOUR website!
.
Use the formula

a%5E2+-+b%5E2 = (a+b)*(a-b).

Apply it with a = s+2, b = s.  You will get

%28s%2B2%29%5E2+-+s%5E2 = %28s%2B2%2Bs%29%2A%28s%2B2-s%29 = 2*(2s+2) = 4*(s+1).