Answer:
320
Step-by-step explanation:
j u s t a g u e s s b u t i t h i n k i t s r i g h t
Just plug in 10^2-7.5^2
To get 43.75
I hope you figure this out.
The answer is A
y^12/5
(9x^(5)y^(16))/(45x^(5)y^(4))