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CaHeK987 [17]
2 years ago
13

Solve by completing the square.

Mathematics
1 answer:
Leona [35]2 years ago
3 0

Answer:

28- 4±\sqrt{21}

30- -4±2i

Hope this helps!

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Mrrafil [7]

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A sequence that has a common difference is an <em>arithmetic sequence</em>:

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