SOLUTION: 12d^2+38d+30=0

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Question 690010: 12d^2+38d+30=0
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Use the quadratic formula to solve for d

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

d+=+%28-%2838%29%2B-sqrt%28%2838%29%5E2-4%2812%29%2830%29%29%29%2F%282%2812%29%29 Plug in a+=+12, b+=+38, c+=+30

d+=+%28-38%2B-sqrt%281444-%281440%29%29%29%2F%2824%29

d+=+%28-38%2B-sqrt%284%29%29%2F24

d+=+%28-38%2Bsqrt%284%29%29%2F24 or d+=+%28-38-sqrt%284%29%29%2F24

d+=+%28-38%2B2%29%2F24 or d+=+%28-38-2%29%2F24

d+=+-36%2F24 or d+=+-40%2F24

d+=+-3%2F2 or d+=+-5%2F3

So the two solutions are d+=+-3%2F2 or d+=+-5%2F3