Answer:
729
Step-by-step explanation:
A square does not have a diameter so I am assuming that a side length is 9. If that is true all you must do is multiply 9x9x9
X = -1, x = 3
Sooooo, 2 x -1 = -1^2-3
which means, -2 = 1 - 3 which is -2 = -2
Then we also have 2 x 3 = 3^2 - 3
which means, 6 = 9 - 3 which is 6 = 6
So x = -1 and x = 3
5*6=20+y
30=20+y
30-20=20-20+y
10=y
Check answer by using substitution method
5*6=20+y
30=20+10
30=30
Answer is y=10
The answer to the question in the photo is 21