SOLUTION: x2+4x-10=0

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Question 707803: x2+4x-10=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 x

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

x+=+%28-%284%29%2B-sqrt%28%284%29%5E2-4%281%29%28-10%29%29%29%2F%282%281%29%29 Plug in a+=+1, b+=+4, c+=+-10

x+=+%28-4%2B-sqrt%2816-%28-40%29%29%29%2F%282%29

x+=+%28-4%2B-sqrt%2816%2B40%29%29%2F%282%29

x+=+%28-4%2B-sqrt%2856%29%29%2F2

x+=+%28-4%2Bsqrt%2856%29%29%2F2 or x+=+%28-4-sqrt%2856%29%29%2F2

x+=+%28-4%2B2%2Asqrt%2814%29%29%2F2 or x+=+%28-4-2%2Asqrt%2814%29%29%2F2

x+=+-2%2Bsqrt%2814%29 or x+=+-2-sqrt%2814%29