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OpenStudy (anonymous):
Evaluate the summation of 2 times negative 2 to the n minus 1 power, from n equals 1 to 7.. −256 −84 84 86 i got -256
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OpenStudy (anonymous):
\[\sum_{n=1}^{7} 2(-2)^{n-1}\]
OpenStudy (anonymous):
plug in the n values and add them together |dw:1400454205782:dw|
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