SOLUTION: Solve for u 3u^2+10u=-3

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Question 627162: Solve for u
3u^2+10u=-3
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
3u%5E2%2B10u=-3

3u%5E2%2B10u%2B3=0

Now use the quadratic formula to solve for 'u':

u+=+%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29

u+=+%28-%2810%29%2B-sqrt%28%2810%29%5E2-4%283%29%283%29%29%29%2F%282%283%29%29

u+=+%28-10%2B-sqrt%28100-%2836%29%29%29%2F%286%29

u+=+%28-10%2B-sqrt%2864%29%29%2F6

u+=+%28-10%2Bsqrt%2864%29%29%2F6 or u+=+%28-10-sqrt%2864%29%29%2F6

u+=+%28-10%2B8%29%2F6 or u+=+%28-10-8%29%2F6

u+=+-2%2F6 or u+=+-18%2F6

u+=+-1%2F3 or u+=+-3

So the solutions are u+=+-1%2F3 or u+=+-3