119y^2-162y-945=0

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Solution for 119y^2-162y-945=0 equation:


Simplifying
119y2 + -162y + -945 = 0

Reorder the terms:
-945 + -162y + 119y2 = 0

Solving
-945 + -162y + 119y2 = 0

Solving for variable 'y'.

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

Divide each side by '119'.
-7.941176471 + -1.361344538y + y2 = 0

Move the constant term to the right:

Add '7.941176471' to each side of the equation.
-7.941176471 + -1.361344538y + 7.941176471 + y2 = 0 + 7.941176471

Reorder the terms:
-7.941176471 + 7.941176471 + -1.361344538y + y2 = 0 + 7.941176471

Combine like terms: -7.941176471 + 7.941176471 = 0.000000000
0.000000000 + -1.361344538y + y2 = 0 + 7.941176471
-1.361344538y + y2 = 0 + 7.941176471

Combine like terms: 0 + 7.941176471 = 7.941176471
-1.361344538y + y2 = 7.941176471

The y term is -1.361344538y.  Take half its coefficient (-0.680672269).
Square it (0.4633147378) and add it to both sides.

Add '0.4633147378' to each side of the equation.
-1.361344538y + 0.4633147378 + y2 = 7.941176471 + 0.4633147378

Reorder the terms:
0.4633147378 + -1.361344538y + y2 = 7.941176471 + 0.4633147378

Combine like terms: 7.941176471 + 0.4633147378 = 8.4044912088
0.4633147378 + -1.361344538y + y2 = 8.4044912088

Factor a perfect square on the left side:
(y + -0.680672269)(y + -0.680672269) = 8.4044912088

Calculate the square root of the right side: 2.899050053

Break this problem into two subproblems by setting 
(y + -0.680672269) equal to 2.899050053 and -2.899050053.

Subproblem 1

y + -0.680672269 = 2.899050053 Simplifying y + -0.680672269 = 2.899050053 Reorder the terms: -0.680672269 + y = 2.899050053 Solving -0.680672269 + y = 2.899050053 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.680672269' to each side of the equation. -0.680672269 + 0.680672269 + y = 2.899050053 + 0.680672269 Combine like terms: -0.680672269 + 0.680672269 = 0.000000000 0.000000000 + y = 2.899050053 + 0.680672269 y = 2.899050053 + 0.680672269 Combine like terms: 2.899050053 + 0.680672269 = 3.579722322 y = 3.579722322 Simplifying y = 3.579722322

Subproblem 2

y + -0.680672269 = -2.899050053 Simplifying y + -0.680672269 = -2.899050053 Reorder the terms: -0.680672269 + y = -2.899050053 Solving -0.680672269 + y = -2.899050053 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.680672269' to each side of the equation. -0.680672269 + 0.680672269 + y = -2.899050053 + 0.680672269 Combine like terms: -0.680672269 + 0.680672269 = 0.000000000 0.000000000 + y = -2.899050053 + 0.680672269 y = -2.899050053 + 0.680672269 Combine like terms: -2.899050053 + 0.680672269 = -2.218377784 y = -2.218377784 Simplifying y = -2.218377784

Solution

The solution to the problem is based on the solutions from the subproblems. y = {3.579722322, -2.218377784}

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