2y^2-12y=94

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Solution for 2y^2-12y=94 equation:


Simplifying
2y2 + -12y = 94

Reorder the terms:
-12y + 2y2 = 94

Solving
-12y + 2y2 = 94

Solving for variable 'y'.

Reorder the terms:
-94 + -12y + 2y2 = 94 + -94

Combine like terms: 94 + -94 = 0
-94 + -12y + 2y2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-47 + -6y + y2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-47 + -6y + y2)' equal to zero and attempt to solve: Simplifying -47 + -6y + y2 = 0 Solving -47 + -6y + y2 = 0 Begin completing the square. Move the constant term to the right: Add '47' to each side of the equation. -47 + -6y + 47 + y2 = 0 + 47 Reorder the terms: -47 + 47 + -6y + y2 = 0 + 47 Combine like terms: -47 + 47 = 0 0 + -6y + y2 = 0 + 47 -6y + y2 = 0 + 47 Combine like terms: 0 + 47 = 47 -6y + y2 = 47 The y term is -6y. Take half its coefficient (-3). Square it (9) and add it to both sides. Add '9' to each side of the equation. -6y + 9 + y2 = 47 + 9 Reorder the terms: 9 + -6y + y2 = 47 + 9 Combine like terms: 47 + 9 = 56 9 + -6y + y2 = 56 Factor a perfect square on the left side: (y + -3)(y + -3) = 56 Calculate the square root of the right side: 7.483314774 Break this problem into two subproblems by setting (y + -3) equal to 7.483314774 and -7.483314774.

Subproblem 1

y + -3 = 7.483314774 Simplifying y + -3 = 7.483314774 Reorder the terms: -3 + y = 7.483314774 Solving -3 + y = 7.483314774 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + y = 7.483314774 + 3 Combine like terms: -3 + 3 = 0 0 + y = 7.483314774 + 3 y = 7.483314774 + 3 Combine like terms: 7.483314774 + 3 = 10.483314774 y = 10.483314774 Simplifying y = 10.483314774

Subproblem 2

y + -3 = -7.483314774 Simplifying y + -3 = -7.483314774 Reorder the terms: -3 + y = -7.483314774 Solving -3 + y = -7.483314774 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + y = -7.483314774 + 3 Combine like terms: -3 + 3 = 0 0 + y = -7.483314774 + 3 y = -7.483314774 + 3 Combine like terms: -7.483314774 + 3 = -4.483314774 y = -4.483314774 Simplifying y = -4.483314774

Solution

The solution to the problem is based on the solutions from the subproblems. y = {10.483314774, -4.483314774}

Solution

y = {10.483314774, -4.483314774}

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