10y^2-12y+7=

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Solution for 10y^2-12y+7= equation:


Simplifying
10y2 + -12y + 7 = 0

Reorder the terms:
7 + -12y + 10y2 = 0

Solving
7 + -12y + 10y2 = 0

Solving for variable 'y'.

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

Divide each side by '10'.
0.7 + -1.2y + y2 = 0

Move the constant term to the right:

Add '-0.7' to each side of the equation.
0.7 + -1.2y + -0.7 + y2 = 0 + -0.7

Reorder the terms:
0.7 + -0.7 + -1.2y + y2 = 0 + -0.7

Combine like terms: 0.7 + -0.7 = 0.0
0.0 + -1.2y + y2 = 0 + -0.7
-1.2y + y2 = 0 + -0.7

Combine like terms: 0 + -0.7 = -0.7
-1.2y + y2 = -0.7

The y term is -1.2y.  Take half its coefficient (-0.6).
Square it (0.36) and add it to both sides.

Add '0.36' to each side of the equation.
-1.2y + 0.36 + y2 = -0.7 + 0.36

Reorder the terms:
0.36 + -1.2y + y2 = -0.7 + 0.36

Combine like terms: -0.7 + 0.36 = -0.34
0.36 + -1.2y + y2 = -0.34

Factor a perfect square on the left side:
(y + -0.6)(y + -0.6) = -0.34

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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