SOLUTION: Use the quadratic formula to solve the equation 5x²+9x-2=0

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Question 692497: Use the quadratic formula to solve the equation
5x²+9x-2=0
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

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

x+=+%28-%289%29%2B-sqrt%28%289%29%5E2-4%285%29%28-2%29%29%29%2F%282%285%29%29 Plug in a+=+5, b+=+9, c+=+-2

x+=+%28-9%2B-sqrt%2881-%28-40%29%29%29%2F%2810%29

x+=+%28-9%2B-sqrt%2881%2B40%29%29%2F%2810%29

x+=+%28-9%2B-sqrt%28121%29%29%2F10

x+=+%28-9%2Bsqrt%28121%29%29%2F10 or x+=+%28-9-sqrt%28121%29%29%2F10

x+=+%28-9%2B11%29%2F10 or x+=+%28-9-11%29%2F10

x+=+2%2F10 or x+=+-20%2F10

x+=+1%2F5 or x+=+-2