Respuesta :

Answer:

f(x)  = 4x² + 9x - 28

Step-by-step explanation:

Create the polynomial by multiplying (4x - 7) and (x + 4) together:

f(x) = 4x² + 16x - 7x - 28, or

f(x)  = 4x² + 9x - 28

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