91 squared equals 8,281.
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91 is neither a prime nor a squared number. It is a composite having the prime factors 7 x 13.
9x squared-15x squared = -6
1 squared = 1 2 squared = 4 3 squared = 9 4 squared = 16 5 squared = 25 6 squared = 36 7 squared = 49 8 squared = 64 9 squared = 81 10 squared = 100
No
13 squared x 4 squared is equal to 2,704.