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Write the sum using summation notation, assuming the suggested pattern continues. 2 - 6 + 18 - 54 + ...

Write the sum using summation notation, assuming the suggested pattern continues. 2 - 6 + 18 - 54 + ...
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Write the sum using summation notation, assuming the suggested pattern continues. 2 - 6 + 18 - 54 + ...

User StarPinkER
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well for that part of the equation : the ans. is -40, but what bout' the other part ?

User Idubnori
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E with infinity over it and n=0 under it with 2(-3)^n to the side
User NoloMokgosi
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