Answer:
c = 15^2
Step-by-step explanation:
a*2 + b^2 = c^2
a^2 is 9 and b^2 is 12.
9^2 + 12^2 = c^2
9^2 is 81 and 12^2 is 144
81 + 144 = c^2 = 225
∫225 is 15
So the expression is 9^2 + 12^2 = 15^2
