Answer:
F= a x a = a²
O = a x 4 = 4a
I = 3 x a = 3a
L = 3 x 4 = 12
= a² + 4a + 3a + 12
= a² + 7a + 12
F=(a)(a)=a²
O=(a)(4)=4a
I=(3)(a)=3a
L=(3)(4)=12
Step-by-step explanation:
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