u^2+10u+22=0

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Solution for u^2+10u+22=0 equation:


Simplifying
u2 + 10u + 22 = 0

Reorder the terms:
22 + 10u + u2 = 0

Solving
22 + 10u + u2 = 0

Solving for variable 'u'.

Begin completing the square.

Move the constant term to the right:

Add '-22' to each side of the equation.
22 + 10u + -22 + u2 = 0 + -22

Reorder the terms:
22 + -22 + 10u + u2 = 0 + -22

Combine like terms: 22 + -22 = 0
0 + 10u + u2 = 0 + -22
10u + u2 = 0 + -22

Combine like terms: 0 + -22 = -22
10u + u2 = -22

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

Add '25' to each side of the equation.
10u + 25 + u2 = -22 + 25

Reorder the terms:
25 + 10u + u2 = -22 + 25

Combine like terms: -22 + 25 = 3
25 + 10u + u2 = 3

Factor a perfect square on the left side:
(u + 5)(u + 5) = 3

Calculate the square root of the right side: 1.732050808

Break this problem into two subproblems by setting 
(u + 5) equal to 1.732050808 and -1.732050808.

Subproblem 1

u + 5 = 1.732050808 Simplifying u + 5 = 1.732050808 Reorder the terms: 5 + u = 1.732050808 Solving 5 + u = 1.732050808 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + u = 1.732050808 + -5 Combine like terms: 5 + -5 = 0 0 + u = 1.732050808 + -5 u = 1.732050808 + -5 Combine like terms: 1.732050808 + -5 = -3.267949192 u = -3.267949192 Simplifying u = -3.267949192

Subproblem 2

u + 5 = -1.732050808 Simplifying u + 5 = -1.732050808 Reorder the terms: 5 + u = -1.732050808 Solving 5 + u = -1.732050808 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + u = -1.732050808 + -5 Combine like terms: 5 + -5 = 0 0 + u = -1.732050808 + -5 u = -1.732050808 + -5 Combine like terms: -1.732050808 + -5 = -6.732050808 u = -6.732050808 Simplifying u = -6.732050808

Solution

The solution to the problem is based on the solutions from the subproblems. u = {-3.267949192, -6.732050808}

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