19.14+x^2+8x=144

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Solution for 19.14+x^2+8x=144 equation:


Simplifying
19.14 + x2 + 8x = 144

Reorder the terms:
19.14 + 8x + x2 = 144

Solving
19.14 + 8x + x2 = 144

Solving for variable 'x'.

Reorder the terms:
19.14 + -144 + 8x + x2 = 144 + -144

Combine like terms: 19.14 + -144 = -124.86
-124.86 + 8x + x2 = 144 + -144

Combine like terms: 144 + -144 = 0
-124.86 + 8x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '124.86' to each side of the equation.
-124.86 + 8x + 124.86 + x2 = 0 + 124.86

Reorder the terms:
-124.86 + 124.86 + 8x + x2 = 0 + 124.86

Combine like terms: -124.86 + 124.86 = 0.00
0.00 + 8x + x2 = 0 + 124.86
8x + x2 = 0 + 124.86

Combine like terms: 0 + 124.86 = 124.86
8x + x2 = 124.86

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 = 124.86 + 16

Reorder the terms:
16 + 8x + x2 = 124.86 + 16

Combine like terms: 124.86 + 16 = 140.86
16 + 8x + x2 = 140.86

Factor a perfect square on the left side:
(x + 4)(x + 4) = 140.86

Calculate the square root of the right side: 11.86844556

Break this problem into two subproblems by setting 
(x + 4) equal to 11.86844556 and -11.86844556.

Subproblem 1

x + 4 = 11.86844556 Simplifying x + 4 = 11.86844556 Reorder the terms: 4 + x = 11.86844556 Solving 4 + x = 11.86844556 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 = 11.86844556 + -4 Combine like terms: 4 + -4 = 0 0 + x = 11.86844556 + -4 x = 11.86844556 + -4 Combine like terms: 11.86844556 + -4 = 7.86844556 x = 7.86844556 Simplifying x = 7.86844556

Subproblem 2

x + 4 = -11.86844556 Simplifying x + 4 = -11.86844556 Reorder the terms: 4 + x = -11.86844556 Solving 4 + x = -11.86844556 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 = -11.86844556 + -4 Combine like terms: 4 + -4 = 0 0 + x = -11.86844556 + -4 x = -11.86844556 + -4 Combine like terms: -11.86844556 + -4 = -15.86844556 x = -15.86844556 Simplifying x = -15.86844556

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.86844556, -15.86844556}

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