SOLUTION: If f(x) = x^2 + 2x + 7, find the following values. 1. f(a) 2. f(a - 3) 3. f(a + 3)

Algebra ->  Functions -> SOLUTION: If f(x) = x^2 + 2x + 7, find the following values. 1. f(a) 2. f(a - 3) 3. f(a + 3)      Log On


   

Question 779030: If f(x) = x^2 + 2x + 7, find the following values.
1. f(a)
2. f(a - 3)
3. f(a + 3)
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
Simply substitute the given input numbers, and evaluate to the extent possible. #1 is trivial.
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#2 is, %28a-3%29%5E2%2B2%28a-3%29%2B7 and just needs to be simplified;
a%5E2-6a%2B9%2B2a-6%2B7
a%5E2-4a-16