SOLUTION: Simplify the expression. State the excluded values of the variables a^2+16a+63 ----------- a+7 (Sorry that is a fraction above)

Question 638733: Simplify the expression. State the excluded values of the variables
a^2+16a+63
-----------
a+7

(Sorry that is a fraction above)
Answer by fcabanski(1391) (Show Source): You can put this solution on YOUR website!
For excluded values look at denominators and square roots. Values that make the denominator 0 or square roots - are excluded. In this case a=-7 makes the denominator 0. So a=-7 is excluded.

Factor the top: .

The (a+7) terms cancel. The simplified version is a+9.

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