algebra

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Write a recursive formula for the sequence formula 15,26,48,92,180,.. then find the next term.
can someone please help me

  • algebra -

    Look like Tn = 2T(n-1) - 4
    26 = 2*15-4
    48 = 2*26-4
    so, what's 2*180-4?

  • algebra -

    got it thanks

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