Answer:
[tex]7 {a}^{2} + a - 4[/tex]
Step-by-step explanation:
please see the attached photo for solution.
[tex]\frac{28a^{2} + 4a -16}{4} \\\frac{7a^{2} + 4a -16}{4} \\\frac{7a^{2} + a -16}{4} \\\frac{7a^{2} + a -4}{}[/tex]
Final answer: 7a² + a - 4
