Answer:
[tex] {4x}^{2} + x + 3[/tex]
Step-by-step explanation:
[tex] \frac{ {16x}^{3} + {4x}^{2} + 12x }{4x} [/tex]
[tex] \frac{4x( {4x}^{2} + x + 3)}{4x} [/tex]
Done :))
