0.5x+19=(x^2)+4x+4

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Solution for 0.5x+19=(x^2)+4x+4 equation:


Simplifying
0.5x + 19 = (x2) + 4x + 4

Reorder the terms:
19 + 0.5x = (x2) + 4x + 4
19 + 0.5x = x2 + 4x + 4

Reorder the terms:
19 + 0.5x = 4 + 4x + x2

Solving
19 + 0.5x = 4 + 4x + x2

Solving for variable 'x'.

Reorder the terms:
19 + -4 + 0.5x + -4x + -1x2 = 4 + 4x + x2 + -4 + -4x + -1x2

Combine like terms: 19 + -4 = 15
15 + 0.5x + -4x + -1x2 = 4 + 4x + x2 + -4 + -4x + -1x2

Combine like terms: 0.5x + -4x = -3.5x
15 + -3.5x + -1x2 = 4 + 4x + x2 + -4 + -4x + -1x2

Reorder the terms:
15 + -3.5x + -1x2 = 4 + -4 + 4x + -4x + x2 + -1x2

Combine like terms: 4 + -4 = 0
15 + -3.5x + -1x2 = 0 + 4x + -4x + x2 + -1x2
15 + -3.5x + -1x2 = 4x + -4x + x2 + -1x2

Combine like terms: 4x + -4x = 0
15 + -3.5x + -1x2 = 0 + x2 + -1x2
15 + -3.5x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
15 + -3.5x + -1x2 = 0

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

Divide each side by '-1'.
-15 + 3.5x + x2 = 0

Move the constant term to the right:

Add '15' to each side of the equation.
-15 + 3.5x + 15 + x2 = 0 + 15

Reorder the terms:
-15 + 15 + 3.5x + x2 = 0 + 15

Combine like terms: -15 + 15 = 0
0 + 3.5x + x2 = 0 + 15
3.5x + x2 = 0 + 15

Combine like terms: 0 + 15 = 15
3.5x + x2 = 15

The x term is 3.5x.  Take half its coefficient (1.75).
Square it (3.0625) and add it to both sides.

Add '3.0625' to each side of the equation.
3.5x + 3.0625 + x2 = 15 + 3.0625

Reorder the terms:
3.0625 + 3.5x + x2 = 15 + 3.0625

Combine like terms: 15 + 3.0625 = 18.0625
3.0625 + 3.5x + x2 = 18.0625

Factor a perfect square on the left side:
(x + 1.75)(x + 1.75) = 18.0625

Calculate the square root of the right side: 4.25

Break this problem into two subproblems by setting 
(x + 1.75) equal to 4.25 and -4.25.

Subproblem 1

x + 1.75 = 4.25 Simplifying x + 1.75 = 4.25 Reorder the terms: 1.75 + x = 4.25 Solving 1.75 + x = 4.25 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + x = 4.25 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + x = 4.25 + -1.75 x = 4.25 + -1.75 Combine like terms: 4.25 + -1.75 = 2.5 x = 2.5 Simplifying x = 2.5

Subproblem 2

x + 1.75 = -4.25 Simplifying x + 1.75 = -4.25 Reorder the terms: 1.75 + x = -4.25 Solving 1.75 + x = -4.25 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + x = -4.25 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + x = -4.25 + -1.75 x = -4.25 + -1.75 Combine like terms: -4.25 + -1.75 = -6 x = -6 Simplifying x = -6

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.5, -6}

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