19y^2-48y+30=0

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Solution for 19y^2-48y+30=0 equation:


Simplifying
19y2 + -48y + 30 = 0

Reorder the terms:
30 + -48y + 19y2 = 0

Solving
30 + -48y + 19y2 = 0

Solving for variable 'y'.

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

Divide each side by '19'.
1.578947368 + -2.526315789y + y2 = 0

Move the constant term to the right:

Add '-1.578947368' to each side of the equation.
1.578947368 + -2.526315789y + -1.578947368 + y2 = 0 + -1.578947368

Reorder the terms:
1.578947368 + -1.578947368 + -2.526315789y + y2 = 0 + -1.578947368

Combine like terms: 1.578947368 + -1.578947368 = 0.000000000
0.000000000 + -2.526315789y + y2 = 0 + -1.578947368
-2.526315789y + y2 = 0 + -1.578947368

Combine like terms: 0 + -1.578947368 = -1.578947368
-2.526315789y + y2 = -1.578947368

The y term is -2.526315789y.  Take half its coefficient (-1.263157895).
Square it (1.595567868) and add it to both sides.

Add '1.595567868' to each side of the equation.
-2.526315789y + 1.595567868 + y2 = -1.578947368 + 1.595567868

Reorder the terms:
1.595567868 + -2.526315789y + y2 = -1.578947368 + 1.595567868

Combine like terms: -1.578947368 + 1.595567868 = 0.0166205
1.595567868 + -2.526315789y + y2 = 0.0166205

Factor a perfect square on the left side:
(y + -1.263157895)(y + -1.263157895) = 0.0166205

Calculate the square root of the right side: 0.128920518

Break this problem into two subproblems by setting 
(y + -1.263157895) equal to 0.128920518 and -0.128920518.

Subproblem 1

y + -1.263157895 = 0.128920518 Simplifying y + -1.263157895 = 0.128920518 Reorder the terms: -1.263157895 + y = 0.128920518 Solving -1.263157895 + y = 0.128920518 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1.263157895' to each side of the equation. -1.263157895 + 1.263157895 + y = 0.128920518 + 1.263157895 Combine like terms: -1.263157895 + 1.263157895 = 0.000000000 0.000000000 + y = 0.128920518 + 1.263157895 y = 0.128920518 + 1.263157895 Combine like terms: 0.128920518 + 1.263157895 = 1.392078413 y = 1.392078413 Simplifying y = 1.392078413

Subproblem 2

y + -1.263157895 = -0.128920518 Simplifying y + -1.263157895 = -0.128920518 Reorder the terms: -1.263157895 + y = -0.128920518 Solving -1.263157895 + y = -0.128920518 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1.263157895' to each side of the equation. -1.263157895 + 1.263157895 + y = -0.128920518 + 1.263157895 Combine like terms: -1.263157895 + 1.263157895 = 0.000000000 0.000000000 + y = -0.128920518 + 1.263157895 y = -0.128920518 + 1.263157895 Combine like terms: -0.128920518 + 1.263157895 = 1.134237377 y = 1.134237377 Simplifying y = 1.134237377

Solution

The solution to the problem is based on the solutions from the subproblems. y = {1.392078413, 1.134237377}

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