SOLUTION: please help me with this problem. Solve the equation. 21n^2 + 63n = 0

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Question 6443: please help me with this problem.
Solve the equation.
21n^2 + 63n = 0
Answer by hamda(7) About Me  (Show Source):
You can put this solution on YOUR website!

21n^2 + 63n = 0
21n(n + 3) = 0
21n = 0 , n + 3 = 0
n = 0, n = -3 (Answer)