solve n^2 + 3n - 12 = 6 using quadratic equation by completing the square and describe in detail each step

Question

Mathematics

Shannon George

24 October, 15:21

solve n^2 + 3n - 12 = 6 using quadratic equation by completing the square and describe in detail each step

+3

Answers (1)

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Celeste Maynard · Answer 1

n = 3, - 6

Step-by-step explanation:

n ^2 + 3 n - 12 = 6.

Subtract 6 from both sides.

n ^2 + 3 n - 12 - 6 = 6 - 6

n^ 2 + 3 n - 18 = 0

⇒ (n + 6) (n - 3) = 0

∴ n = - 6, 3