If f(x) = x2 + 4x + 1, what is f(x + 5)? (Simplify your answer completely.) f(x + 5) =

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Q: If  f(x) = x2 + 4x + 5,  what is  f(x + 3)?  (Simplify your answer completely.)

A:

Q: If f(x) = 3x + 2 and g(x) = x - 5, then what does (f+g)(3) equal?

A:

Polynomials

Try substituting 1. You will get 6 and not 0. Try other real values also. What About -2? Let us check.