1. In an arithmetic series, three consecutive terms have a sum of -9 and a product of 48. Find the possible values of these terms. I really cant figure it out. I tries using the Sum of series formula and arithmetic series formula, but no results.
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Hello, Originally Posted by milan 1. In an arithmetic series, three consecutive terms have a sum of -9 and a product of 48. Find the possible values of these terms. I really cant figure it out. I tries using the Sum of series formula and arithmetic series formula, but no results. Let k be the constant progression of the series. Let the three consecutive terms. We have , But we also know that and Does this help ?
I know all that, but i dont know how to find the answer using it:P, thanx anyways though.
Substituting and in , you have : Now substituting in , you get : We know that a+k=-3. Hence and furthermore, , so : So If , then and If , then ...................... Does it look better ?
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