5y^2+12=7y

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Solution for 5y^2+12=7y equation:


Simplifying
5y2 + 12 = 7y

Reorder the terms:
12 + 5y2 = 7y

Solving
12 + 5y2 = 7y

Solving for variable 'y'.

Reorder the terms:
12 + -7y + 5y2 = 7y + -7y

Combine like terms: 7y + -7y = 0
12 + -7y + 5y2 = 0

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

Divide each side by '5'.
2.4 + -1.4y + y2 = 0

Move the constant term to the right:

Add '-2.4' to each side of the equation.
2.4 + -1.4y + -2.4 + y2 = 0 + -2.4

Reorder the terms:
2.4 + -2.4 + -1.4y + y2 = 0 + -2.4

Combine like terms: 2.4 + -2.4 = 0.0
0.0 + -1.4y + y2 = 0 + -2.4
-1.4y + y2 = 0 + -2.4

Combine like terms: 0 + -2.4 = -2.4
-1.4y + y2 = -2.4

The y term is -1.4y.  Take half its coefficient (-0.7).
Square it (0.49) and add it to both sides.

Add '0.49' to each side of the equation.
-1.4y + 0.49 + y2 = -2.4 + 0.49

Reorder the terms:
0.49 + -1.4y + y2 = -2.4 + 0.49

Combine like terms: -2.4 + 0.49 = -1.91
0.49 + -1.4y + y2 = -1.91

Factor a perfect square on the left side:
(y + -0.7)(y + -0.7) = -1.91

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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