Answer:84
Step-by-step explanation:
(6+2)2 + 4(3+9) + 5(3+1)-first
(8)2 + 4(3+9) + 5(3+1)-second
(8)2 + 4(12) + 5(3+1)-third
(8)2 + 4(12) + 5(4)-fourth
16 + 4(12) + 5(4)-fifth
16 + 48 + 5(4)-sixth
16 + 48 + 20-seventh
64 + 20-eighth
84-ninth (last)