Answer:
92 + 122 = c2
81 + 144 = c2
225 = c2
Step-by-step explanation:
21 squared
this is because you add together 9 and 12. this gives you 21 and because you want it squared it would be 21 squared.
Answer to Problem 1: 53
Answer to Problem 2: x ≥ 2
Answer on= 12