3y^2-2y-3y^2+5y^2-1+6y^2=

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Solution for 3y^2-2y-3y^2+5y^2-1+6y^2= equation:


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

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

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

Combine like terms: 5y2 + 6y2 = 11y2
-1 + -2y + 11y2 = 0

Solving
-1 + -2y + 11y2 = 0

Solving for variable 'y'.

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

Divide each side by '11'.
-0.09090909091 + -0.1818181818y + y2 = 0

Move the constant term to the right:

Add '0.09090909091' to each side of the equation.
-0.09090909091 + -0.1818181818y + 0.09090909091 + y2 = 0 + 0.09090909091

Reorder the terms:
-0.09090909091 + 0.09090909091 + -0.1818181818y + y2 = 0 + 0.09090909091

Combine like terms: -0.09090909091 + 0.09090909091 = 0.00000000000
0.00000000000 + -0.1818181818y + y2 = 0 + 0.09090909091
-0.1818181818y + y2 = 0 + 0.09090909091

Combine like terms: 0 + 0.09090909091 = 0.09090909091
-0.1818181818y + y2 = 0.09090909091

The y term is -0.1818181818y.  Take half its coefficient (-0.0909090909).
Square it (0.008264462808) and add it to both sides.

Add '0.008264462808' to each side of the equation.
-0.1818181818y + 0.008264462808 + y2 = 0.09090909091 + 0.008264462808

Reorder the terms:
0.008264462808 + -0.1818181818y + y2 = 0.09090909091 + 0.008264462808

Combine like terms: 0.09090909091 + 0.008264462808 = 0.099173553718
0.008264462808 + -0.1818181818y + y2 = 0.099173553718

Factor a perfect square on the left side:
(y + -0.0909090909)(y + -0.0909090909) = 0.099173553718

Calculate the square root of the right side: 0.314918329

Break this problem into two subproblems by setting 
(y + -0.0909090909) equal to 0.314918329 and -0.314918329.

Subproblem 1

y + -0.0909090909 = 0.314918329 Simplifying y + -0.0909090909 = 0.314918329 Reorder the terms: -0.0909090909 + y = 0.314918329 Solving -0.0909090909 + y = 0.314918329 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.0909090909' to each side of the equation. -0.0909090909 + 0.0909090909 + y = 0.314918329 + 0.0909090909 Combine like terms: -0.0909090909 + 0.0909090909 = 0.0000000000 0.0000000000 + y = 0.314918329 + 0.0909090909 y = 0.314918329 + 0.0909090909 Combine like terms: 0.314918329 + 0.0909090909 = 0.4058274199 y = 0.4058274199 Simplifying y = 0.4058274199

Subproblem 2

y + -0.0909090909 = -0.314918329 Simplifying y + -0.0909090909 = -0.314918329 Reorder the terms: -0.0909090909 + y = -0.314918329 Solving -0.0909090909 + y = -0.314918329 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.0909090909' to each side of the equation. -0.0909090909 + 0.0909090909 + y = -0.314918329 + 0.0909090909 Combine like terms: -0.0909090909 + 0.0909090909 = 0.0000000000 0.0000000000 + y = -0.314918329 + 0.0909090909 y = -0.314918329 + 0.0909090909 Combine like terms: -0.314918329 + 0.0909090909 = -0.2240092381 y = -0.2240092381 Simplifying y = -0.2240092381

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.4058274199, -0.2240092381}

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