17y-y^2-5=-57+2y^2

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Solution for 17y-y^2-5=-57+2y^2 equation:


Simplifying
17y + -1y2 + -5 = -57 + 2y2

Reorder the terms:
-5 + 17y + -1y2 = -57 + 2y2

Solving
-5 + 17y + -1y2 = -57 + 2y2

Solving for variable 'y'.

Reorder the terms:
-5 + 57 + 17y + -1y2 + -2y2 = -57 + 2y2 + 57 + -2y2

Combine like terms: -5 + 57 = 52
52 + 17y + -1y2 + -2y2 = -57 + 2y2 + 57 + -2y2

Combine like terms: -1y2 + -2y2 = -3y2
52 + 17y + -3y2 = -57 + 2y2 + 57 + -2y2

Reorder the terms:
52 + 17y + -3y2 = -57 + 57 + 2y2 + -2y2

Combine like terms: -57 + 57 = 0
52 + 17y + -3y2 = 0 + 2y2 + -2y2
52 + 17y + -3y2 = 2y2 + -2y2

Combine like terms: 2y2 + -2y2 = 0
52 + 17y + -3y2 = 0

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
-17.33333333 + -5.666666667y + y2 = 0

Move the constant term to the right:

Add '17.33333333' to each side of the equation.
-17.33333333 + -5.666666667y + 17.33333333 + y2 = 0 + 17.33333333

Reorder the terms:
-17.33333333 + 17.33333333 + -5.666666667y + y2 = 0 + 17.33333333

Combine like terms: -17.33333333 + 17.33333333 = 0.00000000
0.00000000 + -5.666666667y + y2 = 0 + 17.33333333
-5.666666667y + y2 = 0 + 17.33333333

Combine like terms: 0 + 17.33333333 = 17.33333333
-5.666666667y + y2 = 17.33333333

The y term is -5.666666667y.  Take half its coefficient (-2.833333334).
Square it (8.027777782) and add it to both sides.

Add '8.027777782' to each side of the equation.
-5.666666667y + 8.027777782 + y2 = 17.33333333 + 8.027777782

Reorder the terms:
8.027777782 + -5.666666667y + y2 = 17.33333333 + 8.027777782

Combine like terms: 17.33333333 + 8.027777782 = 25.361111112
8.027777782 + -5.666666667y + y2 = 25.361111112

Factor a perfect square on the left side:
(y + -2.833333334)(y + -2.833333334) = 25.361111112

Calculate the square root of the right side: 5.035981643

Break this problem into two subproblems by setting 
(y + -2.833333334) equal to 5.035981643 and -5.035981643.

Subproblem 1

y + -2.833333334 = 5.035981643 Simplifying y + -2.833333334 = 5.035981643 Reorder the terms: -2.833333334 + y = 5.035981643 Solving -2.833333334 + y = 5.035981643 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '2.833333334' to each side of the equation. -2.833333334 + 2.833333334 + y = 5.035981643 + 2.833333334 Combine like terms: -2.833333334 + 2.833333334 = 0.000000000 0.000000000 + y = 5.035981643 + 2.833333334 y = 5.035981643 + 2.833333334 Combine like terms: 5.035981643 + 2.833333334 = 7.869314977 y = 7.869314977 Simplifying y = 7.869314977

Subproblem 2

y + -2.833333334 = -5.035981643 Simplifying y + -2.833333334 = -5.035981643 Reorder the terms: -2.833333334 + y = -5.035981643 Solving -2.833333334 + y = -5.035981643 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '2.833333334' to each side of the equation. -2.833333334 + 2.833333334 + y = -5.035981643 + 2.833333334 Combine like terms: -2.833333334 + 2.833333334 = 0.000000000 0.000000000 + y = -5.035981643 + 2.833333334 y = -5.035981643 + 2.833333334 Combine like terms: -5.035981643 + 2.833333334 = -2.202648309 y = -2.202648309 Simplifying y = -2.202648309

Solution

The solution to the problem is based on the solutions from the subproblems. y = {7.869314977, -2.202648309}

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