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1 year ago

The n-th term of a number pattern is as follows:

Mathematics

1 answer:

Ilia_Sergeevich [38]1 year ago

7 0

9 = 3² is not prime, so $T_9 = 9^2-8 = 81-8 = 73$ .

7 is prime, so $T_7 = 7\times7+6 = 55$ .

Then the difference is $T_9 - T_7 = 73 - 55 = \boxed{18}$ .

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2 years ago

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2 years ago

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Step-by-step explanation:

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