7y^2-y+9=0

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Solution for 7y^2-y+9=0 equation:


Simplifying
7y2 + -1y + 9 = 0

Reorder the terms:
9 + -1y + 7y2 = 0

Solving
9 + -1y + 7y2 = 0

Solving for variable 'y'.

Begin completing the square.  Divide all terms by
7 the coefficient of the squared term: 

Divide each side by '7'.
1.285714286 + -0.1428571429y + y2 = 0

Move the constant term to the right:

Add '-1.285714286' to each side of the equation.
1.285714286 + -0.1428571429y + -1.285714286 + y2 = 0 + -1.285714286

Reorder the terms:
1.285714286 + -1.285714286 + -0.1428571429y + y2 = 0 + -1.285714286

Combine like terms: 1.285714286 + -1.285714286 = 0.000000000
0.000000000 + -0.1428571429y + y2 = 0 + -1.285714286
-0.1428571429y + y2 = 0 + -1.285714286

Combine like terms: 0 + -1.285714286 = -1.285714286
-0.1428571429y + y2 = -1.285714286

The y term is -0.1428571429y.  Take half its coefficient (-0.07142857145).
Square it (0.005102040819) and add it to both sides.

Add '0.005102040819' to each side of the equation.
-0.1428571429y + 0.005102040819 + y2 = -1.285714286 + 0.005102040819

Reorder the terms:
0.005102040819 + -0.1428571429y + y2 = -1.285714286 + 0.005102040819

Combine like terms: -1.285714286 + 0.005102040819 = -1.280612245181
0.005102040819 + -0.1428571429y + y2 = -1.280612245181

Factor a perfect square on the left side:
(y + -0.07142857145)(y + -0.07142857145) = -1.280612245181

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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