Question

Which one?
A. B. C. or D? ​

Answer 1

A

Explanation:

`2n^2 + 11n + 9 = 0\\2n^2 + 9n + 2n + 9 = 0\\n(2n + 9) + 1(2n + 9) = 0\\(2n + 9)(n + 1) = 0\\when, 2n + 9 = 0\\2n = -9\\n = (-9)/(2)\\\\when, n + 1 = 0\\n = -1\\\\\thus n = -1, (-9)/(2)`

Answer 2

the answer is A

Explanation:

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