SOLUTION: Two X squared minus 9x plus 1 equals 0? 2x^2-9x+1=0 Should have 2 answers?

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Question 393689: Two X squared minus 9x plus 1 equals 0? 2x^2-9x+1=0 Should have 2 answers?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!



Hi

Let x represent 

2x^2-9x+1=0   

|yes, quadratic equation may have up to two x-values that satisfy the equation

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

x+=+%289+%2B-+sqrt%28+73%29%29%2F%284%29+

x+=+%289+%2B-+8.544%29%2F4+



x = 4.386, x = 0.114 to the nearest thousandths



for ex:  x^2 +6x + 9 = 0 have only one unique solution x = -3

That is, the parabola only crosses x-axis at one point

        (x+3)(x+3) = 0