y^2+6y-38=0

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Solution for y^2+6y-38=0 equation:


Simplifying
y2 + 6y + -38 = 0

Reorder the terms:
-38 + 6y + y2 = 0

Solving
-38 + 6y + y2 = 0

Solving for variable 'y'.

Begin completing the square.

Move the constant term to the right:

Add '38' to each side of the equation.
-38 + 6y + 38 + y2 = 0 + 38

Reorder the terms:
-38 + 38 + 6y + y2 = 0 + 38

Combine like terms: -38 + 38 = 0
0 + 6y + y2 = 0 + 38
6y + y2 = 0 + 38

Combine like terms: 0 + 38 = 38
6y + y2 = 38

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 = 38 + 9

Reorder the terms:
9 + 6y + y2 = 38 + 9

Combine like terms: 38 + 9 = 47
9 + 6y + y2 = 47

Factor a perfect square on the left side:
(y + 3)(y + 3) = 47

Calculate the square root of the right side: 6.8556546

Break this problem into two subproblems by setting 
(y + 3) equal to 6.8556546 and -6.8556546.

Subproblem 1

y + 3 = 6.8556546 Simplifying y + 3 = 6.8556546 Reorder the terms: 3 + y = 6.8556546 Solving 3 + y = 6.8556546 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 = 6.8556546 + -3 Combine like terms: 3 + -3 = 0 0 + y = 6.8556546 + -3 y = 6.8556546 + -3 Combine like terms: 6.8556546 + -3 = 3.8556546 y = 3.8556546 Simplifying y = 3.8556546

Subproblem 2

y + 3 = -6.8556546 Simplifying y + 3 = -6.8556546 Reorder the terms: 3 + y = -6.8556546 Solving 3 + y = -6.8556546 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 = -6.8556546 + -3 Combine like terms: 3 + -3 = 0 0 + y = -6.8556546 + -3 y = -6.8556546 + -3 Combine like terms: -6.8556546 + -3 = -9.8556546 y = -9.8556546 Simplifying y = -9.8556546

Solution

The solution to the problem is based on the solutions from the subproblems. y = {3.8556546, -9.8556546}

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