2n-4= work out the first three terms of the sequence
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Answer:
-2, 0, 2...
Step-by-step explanation:
aₙ = 2n-4
a₁ = 2×1 - 4 = 2-4 = -2
a₂ = 2×2 - 4 = 4-4 = 0
a₃ = 2×3 - 4 = 6-4 = 2
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