No, it is rational.
17 squared = 289
289.
No
Sometimes. eg the irrational number √2 squared is 2 which is rational (2 = 2/1) eg the irrational number √(√2) squared is √2 which is irrational.
5 squared is 5*5 is 25. 25 is not an irrational number.
289 squared times 289 squared is equal to 6,975,757,441.
17 squared = 289
12 squared is not irrational. It's 144 .
20 squared is not an irrational number. 202 = 400.
289.
17 squared = 172 = 289
No
17 squared = 289
17
Sometimes. eg the irrational number √2 squared is 2 which is rational (2 = 2/1) eg the irrational number √(√2) squared is √2 which is irrational.
5 squared is 5*5 is 25. 25 is not an irrational number.
162 is 256 and 172 is 289, so YES, √266 is irrational