The only prime factor of 49 is seven (7).
7(7t^2 - 6t + 7)
49
49
-7 * -7 = +49
7 to the second power
7 to the second power
7 x 7 = 49
7 2 = 49
2 to the second power is 4, which isn't a factor of 54. 3 to the second power is 9, which is a factor of 54 but isn't prime. 4 divided by 9 is 4/9, which isn't prime and isn't a factor of 54.
7 to the second power = 49 (That's 7 times 7)
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