SOLUTION: 2x^2+2x=12 solve

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Question 677309: 2x^2+2x=12
solve
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
2x%5E2%2B2x=12+

2x%5E2%2B2x-12+=+0+

Now use the quadratic formula to solve for x.

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

x+=+%28-%282%29%2B-sqrt%28%282%29%5E2-4%282%29%28-12%29%29%29%2F%282%282%29%29

x+=+%28-2%2B-sqrt%284-%28-96%29%29%29%2F%284%29

x+=+%28-2%2B-sqrt%284%2B96%29%29%2F%284%29

x+=+%28-2%2B-sqrt%28100%29%29%2F4

x+=+%28-2%2Bsqrt%28100%29%29%2F4 or x+=+%28-2-sqrt%28100%29%29%2F4

x+=+%28-2%2B10%29%2F4 or x+=+%28-2-10%29%2F4

x+=+8%2F4 or x+=+-12%2F4

x+=+2 or x+=+-3

So the solutions are x+=+2 or x+=+-3