= 7n - 2n² , then
= 7(1) - 2(1)² = 7 - 2 = 5
= 7(2) = 2(2)² = 14 - 8 = 6
= 7(3) - 2(3)² = 21 - 18 = 3
= 7(4) - 2(4)² = 28 - 32 = - 4
= a₁ + (n - 1)d
= 9 - 4n
Can someone help me?
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Answers: 2
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