SOLUTION: 5c^2-11c-12=0

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Question 648286: 5c^2-11c-12=0
Answer by jim_thompson5910(35256) About Me  (Show Source):
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c+=+%28-B%2B-sqrt%28B%5E2-4AC%29%29%2F%282A%29

c+=+%28-%28-11%29%2B-sqrt%28%28-11%29%5E2-4%285%29%28-12%29%29%29%2F%282%285%29%29

c+=+%2811%2B-sqrt%28121-%28-240%29%29%29%2F%2810%29

c+=+%2811%2B-sqrt%28121%2B240%29%29%2F%2810%29

c+=+%2811%2B-sqrt%28361%29%29%2F10

c+=+%2811%2Bsqrt%28361%29%29%2F10 or c+=+%2811-sqrt%28361%29%29%2F10

c+=+%2811%2B19%29%2F10 or c+=+%2811-19%29%2F10

c+=+30%2F10 or c+=+-8%2F10

c+=+3 or c+=+-4%2F5

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