Respuesta :

Answer:

[tex]12x^{3} +28x^{2} +3x + 7[/tex]

Step-by-step explanation:

Use the FOIL method...

multiply [tex]4x^{2}[/tex] by 3x, [tex]4x^{2}[/tex] by 7, 1 by 3x and 1 by 7 to find the answer

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