SOLUTION: x^2-2x-3=5

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Question 675408: x^2-2x-3=5
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2-2x-3=5

x%5E2-2x-3-5=0

x%5E2-2x-8=0

Use the quadratic formula to solve for x

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

x+=+%28-%28-2%29%2B-sqrt%28%28-2%29%5E2-4%281%29%28-8%29%29%29%2F%282%281%29%29

x+=+%282%2B-sqrt%284-%28-32%29%29%29%2F%282%29

x+=+%282%2B-sqrt%284%2B32%29%29%2F%282%29

x+=+%282%2B-sqrt%2836%29%29%2F2

x+=+%282%2Bsqrt%2836%29%29%2F2 or x+=+%282-sqrt%2836%29%29%2F2

x+=+%282%2B6%29%2F2 or x+=+%282-6%29%2F2

x+=+8%2F2 or x+=+-4%2F2

x+=+4 or x+=+-2