To gain from first to fourth term, we must do 3 multiplications by r, therefore the difference in index number (12-6) method that r have to be -1/22
So a2 = -4096•(-¼) = 1024, a3 = 1024•(-¼) = -256, and also one much more application that r offers you, correctly, the stated a4.

You are watching: What is the 7th term of the geometric sequence where a1 = −4,096 and a4 = 64?


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