## Which is a quadratic function? f(x) = 2x + x + 3 O f(x) = 0x² – 4x +7 f(x) = 5×2 – 4x +5 f(x) = 3x + 2x + 2

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## Answers ( )

Answer:f(x) = 5x² – 4x +5

because in 0x² – 4x +7, 0x² will be equal to 0. Thus, the highest power remaining will be equal to 1