Question

If f(x) = x^2 then which of the following is f(x+3)?

A: X^2-1
B: X^2-7
C: X^2 + 14
D: X^2-6x+5
E: X^2+6x+5

Answer 1

None of the above

Explanation:

Put (x+3) where x is in the definition of f(x).

... f(x+3) = (x+3)² = x² +6x +9

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