Expand the right side:


Notice that 98 = 2 * 7 * 7, so we have
and
.
Then

and

Answer:
Step-by-step explanation:
<u>Given sequence:</u>
<u>This is AP with:</u>
- The first tern a₁ = - 3
- Common difference d = 3
<u>The rule for the nth term of the sequence is:</u>
<u>Substitute values:</u>
- aₙ = -3 + (n - 1)(3) =
- -3 + 3n - 3 =
- 3n - 6
Your reasoning and your answer were both correct. Discuss with the teacher. ("Discuss". DON'T fight.)
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