y^2+10y+10=0

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Solution for y^2+10y+10=0 equation:


Simplifying
y2 + 10y + 10 = 0

Reorder the terms:
10 + 10y + y2 = 0

Solving
10 + 10y + y2 = 0

Solving for variable 'y'.

Begin completing the square.

Move the constant term to the right:

Add '-10' to each side of the equation.
10 + 10y + -10 + y2 = 0 + -10

Reorder the terms:
10 + -10 + 10y + y2 = 0 + -10

Combine like terms: 10 + -10 = 0
0 + 10y + y2 = 0 + -10
10y + y2 = 0 + -10

Combine like terms: 0 + -10 = -10
10y + y2 = -10

The y term is 10y.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10y + 25 + y2 = -10 + 25

Reorder the terms:
25 + 10y + y2 = -10 + 25

Combine like terms: -10 + 25 = 15
25 + 10y + y2 = 15

Factor a perfect square on the left side:
(y + 5)(y + 5) = 15

Calculate the square root of the right side: 3.872983346

Break this problem into two subproblems by setting 
(y + 5) equal to 3.872983346 and -3.872983346.

Subproblem 1

y + 5 = 3.872983346 Simplifying y + 5 = 3.872983346 Reorder the terms: 5 + y = 3.872983346 Solving 5 + y = 3.872983346 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + y = 3.872983346 + -5 Combine like terms: 5 + -5 = 0 0 + y = 3.872983346 + -5 y = 3.872983346 + -5 Combine like terms: 3.872983346 + -5 = -1.127016654 y = -1.127016654 Simplifying y = -1.127016654

Subproblem 2

y + 5 = -3.872983346 Simplifying y + 5 = -3.872983346 Reorder the terms: 5 + y = -3.872983346 Solving 5 + y = -3.872983346 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + y = -3.872983346 + -5 Combine like terms: 5 + -5 = 0 0 + y = -3.872983346 + -5 y = -3.872983346 + -5 Combine like terms: -3.872983346 + -5 = -8.872983346 y = -8.872983346 Simplifying y = -8.872983346

Solution

The solution to the problem is based on the solutions from the subproblems. y = {-1.127016654, -8.872983346}

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