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19-09-2016
Mathematics

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what is the expression for the nth term of the geometric sequence 4,-20,100

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19-09-2016

Hello,

[tex] u_{1} =4\\ u_{2} =-20=4*(-5)\\ u_{3} =100=4*(-5)^2\\ ....\\\\ \boxed{ u_{n} =4*(-5)^{n-1}\\} [/tex]

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