2y^2-7y+10-11y^2-7y+1=

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Solution for 2y^2-7y+10-11y^2-7y+1= equation:


Simplifying
2y2 + -7y + 10 + -11y2 + -7y + 1 = 0

Reorder the terms:
10 + 1 + -7y + -7y + 2y2 + -11y2 = 0

Combine like terms: 10 + 1 = 11
11 + -7y + -7y + 2y2 + -11y2 = 0

Combine like terms: -7y + -7y = -14y
11 + -14y + 2y2 + -11y2 = 0

Combine like terms: 2y2 + -11y2 = -9y2
11 + -14y + -9y2 = 0

Solving
11 + -14y + -9y2 = 0

Solving for variable 'y'.

Begin completing the square.  Divide all terms by
-9 the coefficient of the squared term: 

Divide each side by '-9'.
-1.222222222 + 1.555555556y + y2 = 0

Move the constant term to the right:

Add '1.222222222' to each side of the equation.
-1.222222222 + 1.555555556y + 1.222222222 + y2 = 0 + 1.222222222

Reorder the terms:
-1.222222222 + 1.222222222 + 1.555555556y + y2 = 0 + 1.222222222

Combine like terms: -1.222222222 + 1.222222222 = 0.000000000
0.000000000 + 1.555555556y + y2 = 0 + 1.222222222
1.555555556y + y2 = 0 + 1.222222222

Combine like terms: 0 + 1.222222222 = 1.222222222
1.555555556y + y2 = 1.222222222

The y term is 1.555555556y.  Take half its coefficient (0.777777778).
Square it (0.6049382720) and add it to both sides.

Add '0.6049382720' to each side of the equation.
1.555555556y + 0.6049382720 + y2 = 1.222222222 + 0.6049382720

Reorder the terms:
0.6049382720 + 1.555555556y + y2 = 1.222222222 + 0.6049382720

Combine like terms: 1.222222222 + 0.6049382720 = 1.827160494
0.6049382720 + 1.555555556y + y2 = 1.827160494

Factor a perfect square on the left side:
(y + 0.777777778)(y + 0.777777778) = 1.827160494

Calculate the square root of the right side: 1.351725007

Break this problem into two subproblems by setting 
(y + 0.777777778) equal to 1.351725007 and -1.351725007.

Subproblem 1

y + 0.777777778 = 1.351725007 Simplifying y + 0.777777778 = 1.351725007 Reorder the terms: 0.777777778 + y = 1.351725007 Solving 0.777777778 + y = 1.351725007 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.777777778' to each side of the equation. 0.777777778 + -0.777777778 + y = 1.351725007 + -0.777777778 Combine like terms: 0.777777778 + -0.777777778 = 0.000000000 0.000000000 + y = 1.351725007 + -0.777777778 y = 1.351725007 + -0.777777778 Combine like terms: 1.351725007 + -0.777777778 = 0.573947229 y = 0.573947229 Simplifying y = 0.573947229

Subproblem 2

y + 0.777777778 = -1.351725007 Simplifying y + 0.777777778 = -1.351725007 Reorder the terms: 0.777777778 + y = -1.351725007 Solving 0.777777778 + y = -1.351725007 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.777777778' to each side of the equation. 0.777777778 + -0.777777778 + y = -1.351725007 + -0.777777778 Combine like terms: 0.777777778 + -0.777777778 = 0.000000000 0.000000000 + y = -1.351725007 + -0.777777778 y = -1.351725007 + -0.777777778 Combine like terms: -1.351725007 + -0.777777778 = -2.129502785 y = -2.129502785 Simplifying y = -2.129502785

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.573947229, -2.129502785}

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