185=x^2+8x+144

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Solution for 185=x^2+8x+144 equation:


Simplifying
185 = x2 + 8x + 144

Reorder the terms:
185 = 144 + 8x + x2

Solving
185 = 144 + 8x + x2

Solving for variable 'x'.

Combine like terms: 185 + -144 = 41
41 + -8x + -1x2 = 144 + 8x + x2 + -144 + -8x + -1x2

Reorder the terms:
41 + -8x + -1x2 = 144 + -144 + 8x + -8x + x2 + -1x2

Combine like terms: 144 + -144 = 0
41 + -8x + -1x2 = 0 + 8x + -8x + x2 + -1x2
41 + -8x + -1x2 = 8x + -8x + x2 + -1x2

Combine like terms: 8x + -8x = 0
41 + -8x + -1x2 = 0 + x2 + -1x2
41 + -8x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
41 + -8x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-41 + 8x + x2 = 0

Move the constant term to the right:

Add '41' to each side of the equation.
-41 + 8x + 41 + x2 = 0 + 41

Reorder the terms:
-41 + 41 + 8x + x2 = 0 + 41

Combine like terms: -41 + 41 = 0
0 + 8x + x2 = 0 + 41
8x + x2 = 0 + 41

Combine like terms: 0 + 41 = 41
8x + x2 = 41

The x term is 8x.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8x + 16 + x2 = 41 + 16

Reorder the terms:
16 + 8x + x2 = 41 + 16

Combine like terms: 41 + 16 = 57
16 + 8x + x2 = 57

Factor a perfect square on the left side:
(x + 4)(x + 4) = 57

Calculate the square root of the right side: 7.549834435

Break this problem into two subproblems by setting 
(x + 4) equal to 7.549834435 and -7.549834435.

Subproblem 1

x + 4 = 7.549834435 Simplifying x + 4 = 7.549834435 Reorder the terms: 4 + x = 7.549834435 Solving 4 + x = 7.549834435 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 7.549834435 + -4 Combine like terms: 4 + -4 = 0 0 + x = 7.549834435 + -4 x = 7.549834435 + -4 Combine like terms: 7.549834435 + -4 = 3.549834435 x = 3.549834435 Simplifying x = 3.549834435

Subproblem 2

x + 4 = -7.549834435 Simplifying x + 4 = -7.549834435 Reorder the terms: 4 + x = -7.549834435 Solving 4 + x = -7.549834435 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = -7.549834435 + -4 Combine like terms: 4 + -4 = 0 0 + x = -7.549834435 + -4 x = -7.549834435 + -4 Combine like terms: -7.549834435 + -4 = -11.549834435 x = -11.549834435 Simplifying x = -11.549834435

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.549834435, -11.549834435}

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