Geometric Sequences (AS maths help)
The sum of the first two terms of a Geometric Sequence is 3, and the sum of the second and third term is -6. Find the first term and the common ratio. Can someone please help, and explain is step by step, because I'm so confused
Thank you!!
Thank you!!
Original post by Heffalump .
The sum of the first two terms of a Geometric Sequence is 3, and the sum of the second and third term is -6. Find the first term and the common ratio. Can someone please help, and explain is step by step, because I'm so confused Thank you!!
Thank you!!Posted from TSR Mobile
Is a 3 and r -2?
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