SOLUTION: How can you determine if an equation is an identity? How can you verify an identity? What are some examples?

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Question 952515: How can you determine if an equation is an identity? How can you verify an identity? What are some examples?
Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
An identity equation is true for every value of the variable. For example,
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5(a - 3) = 5a - 15 is true for all values of a
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(a + b)^2 = a^2 + 2ab + b^2 is true for all values of a and b
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