find the eighth term of the geometric sequence, given the first term and the common ratio. a1= 2 and r= -2

asked Jun 21, 2024 226k views

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$a_n=ar^(n-1)}\\\\a_1=2\\r=-2\\\\a_8=2\cdot(-2)^(8-1)=2\cdot(-2)^7=2\cdot(-128)=-256$

Ngo Van answered Jun 28, 2024

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