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Problem 17 - Entrance Test

If f(x) = x^2 - 4x + 9, what is f(2)?

Correct: A

To find f(2), substitute x with 2 into the equation f(x) = x^2 - 4x + 9. This gives f(2) = (2)^2 - 4(2) + 9 = 4 - 8 + 9 = 5.