Find x options; a) 21√2/2 b) 21√2 c) 21√3/2 d) 7
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Answer:
<h2>Step-by-step explanation:
In arithmetic sequence: a₂ - a₁ = a₃ - a₂ {common difference}
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Answer:
<h2>Step-by-step explanation:
In arithmetic sequence: a₂ - a₁ = a₃ - a₂ {common difference}