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The nth term of a sequence is Tn=5+(n+1)square evaluate T4-T6

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T4 = 5 + (4+1)^2 = 5 + 25 = 30
T6 = 5 + (6+1)^2 = 5 + 49 = 54

T4 - T6 = 30 - 54 = -24

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