Question

If ƒ(x) = 2x2 + 3, then which of the following represent ƒ(x + 1)?

Answer 1

F(x) = 2x² + 3
f(x + 1) = 2(x + 1)² + 3
f(x + 1) = 2(x² + 2x + 1) + 3
f(x + 1) = 2x² + 4x + 2 + 3
f(x + 1) = 2x² + 4x + 5


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Answer: 2x² + 4x + 5 (Answer D)
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Answer 2

F(x)=2x²+3
f(x+1)=2(x+1)²+3=2x²+4x+2+3=2x²+4x+5