(5y^2-2y+6)-(-5y^2+8y-7)+(-4y^2+3y-3)=

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Solution for (5y^2-2y+6)-(-5y^2+8y-7)+(-4y^2+3y-3)= equation:


Simplifying
(5y2 + -2y + 6) + -1(-5y2 + 8y + -7) + (-4y2 + 3y + -3) = 0

Reorder the terms:
(6 + -2y + 5y2) + -1(-5y2 + 8y + -7) + (-4y2 + 3y + -3) = 0

Remove parenthesis around (6 + -2y + 5y2)
6 + -2y + 5y2 + -1(-5y2 + 8y + -7) + (-4y2 + 3y + -3) = 0

Reorder the terms:
6 + -2y + 5y2 + -1(-7 + 8y + -5y2) + (-4y2 + 3y + -3) = 0
6 + -2y + 5y2 + (-7 * -1 + 8y * -1 + -5y2 * -1) + (-4y2 + 3y + -3) = 0
6 + -2y + 5y2 + (7 + -8y + 5y2) + (-4y2 + 3y + -3) = 0

Reorder the terms:
6 + -2y + 5y2 + 7 + -8y + 5y2 + (-3 + 3y + -4y2) = 0

Remove parenthesis around (-3 + 3y + -4y2)
6 + -2y + 5y2 + 7 + -8y + 5y2 + -3 + 3y + -4y2 = 0

Reorder the terms:
6 + 7 + -3 + -2y + -8y + 3y + 5y2 + 5y2 + -4y2 = 0

Combine like terms: 6 + 7 = 13
13 + -3 + -2y + -8y + 3y + 5y2 + 5y2 + -4y2 = 0

Combine like terms: 13 + -3 = 10
10 + -2y + -8y + 3y + 5y2 + 5y2 + -4y2 = 0

Combine like terms: -2y + -8y = -10y
10 + -10y + 3y + 5y2 + 5y2 + -4y2 = 0

Combine like terms: -10y + 3y = -7y
10 + -7y + 5y2 + 5y2 + -4y2 = 0

Combine like terms: 5y2 + 5y2 = 10y2
10 + -7y + 10y2 + -4y2 = 0

Combine like terms: 10y2 + -4y2 = 6y2
10 + -7y + 6y2 = 0

Solving
10 + -7y + 6y2 = 0

Solving for variable 'y'.

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

Divide each side by '6'.
1.666666667 + -1.166666667y + y2 = 0

Move the constant term to the right:

Add '-1.666666667' to each side of the equation.
1.666666667 + -1.166666667y + -1.666666667 + y2 = 0 + -1.666666667

Reorder the terms:
1.666666667 + -1.666666667 + -1.166666667y + y2 = 0 + -1.666666667

Combine like terms: 1.666666667 + -1.666666667 = 0.000000000
0.000000000 + -1.166666667y + y2 = 0 + -1.666666667
-1.166666667y + y2 = 0 + -1.666666667

Combine like terms: 0 + -1.666666667 = -1.666666667
-1.166666667y + y2 = -1.666666667

The y term is -1.166666667y.  Take half its coefficient (-0.5833333335).
Square it (0.3402777780) and add it to both sides.

Add '0.3402777780' to each side of the equation.
-1.166666667y + 0.3402777780 + y2 = -1.666666667 + 0.3402777780

Reorder the terms:
0.3402777780 + -1.166666667y + y2 = -1.666666667 + 0.3402777780

Combine like terms: -1.666666667 + 0.3402777780 = -1.326388889
0.3402777780 + -1.166666667y + y2 = -1.326388889

Factor a perfect square on the left side:
(y + -0.5833333335)(y + -0.5833333335) = -1.326388889

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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