(3y^2-5y)-(7y^2-6y+2)=0

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Solution for (3y^2-5y)-(7y^2-6y+2)=0 equation:


Simplifying
(3y2 + -5y) + -1(7y2 + -6y + 2) = 0

Reorder the terms:
(-5y + 3y2) + -1(7y2 + -6y + 2) = 0

Remove parenthesis around (-5y + 3y2)
-5y + 3y2 + -1(7y2 + -6y + 2) = 0

Reorder the terms:
-5y + 3y2 + -1(2 + -6y + 7y2) = 0
-5y + 3y2 + (2 * -1 + -6y * -1 + 7y2 * -1) = 0
-5y + 3y2 + (-2 + 6y + -7y2) = 0

Reorder the terms:
-2 + -5y + 6y + 3y2 + -7y2 = 0

Combine like terms: -5y + 6y = 1y
-2 + 1y + 3y2 + -7y2 = 0

Combine like terms: 3y2 + -7y2 = -4y2
-2 + 1y + -4y2 = 0

Solving
-2 + 1y + -4y2 = 0

Solving for variable 'y'.

Begin completing the square.  Divide all terms by
-4 the coefficient of the squared term: 

Divide each side by '-4'.
0.5 + -0.25y + y2 = 0

Move the constant term to the right:

Add '-0.5' to each side of the equation.
0.5 + -0.25y + -0.5 + y2 = 0 + -0.5

Reorder the terms:
0.5 + -0.5 + -0.25y + y2 = 0 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + -0.25y + y2 = 0 + -0.5
-0.25y + y2 = 0 + -0.5

Combine like terms: 0 + -0.5 = -0.5
-0.25y + y2 = -0.5

The y term is -0.25y.  Take half its coefficient (-0.125).
Square it (0.015625) and add it to both sides.

Add '0.015625' to each side of the equation.
-0.25y + 0.015625 + y2 = -0.5 + 0.015625

Reorder the terms:
0.015625 + -0.25y + y2 = -0.5 + 0.015625

Combine like terms: -0.5 + 0.015625 = -0.484375
0.015625 + -0.25y + y2 = -0.484375

Factor a perfect square on the left side:
(y + -0.125)(y + -0.125) = -0.484375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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