44=.5(x+3)x

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Solution for 44=.5(x+3)x equation:


Simplifying
44 = 0.5(x + 3) * x

Reorder the terms:
44 = 0.5(3 + x) * x

Reorder the terms for easier multiplication:
44 = 0.5x(3 + x)
44 = (3 * 0.5x + x * 0.5x)
44 = (1.5x + 0.5x2)

Solving
44 = 1.5x + 0.5x2

Solving for variable 'x'.

Reorder the terms:
44 + -1.5x + -0.5x2 = 1.5x + -1.5x + 0.5x2 + -0.5x2

Combine like terms: 1.5x + -1.5x = 0.0
44 + -1.5x + -0.5x2 = 0.0 + 0.5x2 + -0.5x2
44 + -1.5x + -0.5x2 = 0.5x2 + -0.5x2

Combine like terms: 0.5x2 + -0.5x2 = 0.0
44 + -1.5x + -0.5x2 = 0.0

Begin completing the square.  Divide all terms by
-0.5 the coefficient of the squared term: 

Divide each side by '-0.5'.
-88 + 3x + x2 = 0

Move the constant term to the right:

Add '88' to each side of the equation.
-88 + 3x + 88 + x2 = 0 + 88

Reorder the terms:
-88 + 88 + 3x + x2 = 0 + 88

Combine like terms: -88 + 88 = 0
0 + 3x + x2 = 0 + 88
3x + x2 = 0 + 88

Combine like terms: 0 + 88 = 88
3x + x2 = 88

The x term is 3x.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3x + 2.25 + x2 = 88 + 2.25

Reorder the terms:
2.25 + 3x + x2 = 88 + 2.25

Combine like terms: 88 + 2.25 = 90.25
2.25 + 3x + x2 = 90.25

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 90.25

Calculate the square root of the right side: 9.5

Break this problem into two subproblems by setting 
(x + 1.5) equal to 9.5 and -9.5.

Subproblem 1

x + 1.5 = 9.5 Simplifying x + 1.5 = 9.5 Reorder the terms: 1.5 + x = 9.5 Solving 1.5 + x = 9.5 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 9.5 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 9.5 + -1.5 x = 9.5 + -1.5 Combine like terms: 9.5 + -1.5 = 8 x = 8 Simplifying x = 8

Subproblem 2

x + 1.5 = -9.5 Simplifying x + 1.5 = -9.5 Reorder the terms: 1.5 + x = -9.5 Solving 1.5 + x = -9.5 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -9.5 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -9.5 + -1.5 x = -9.5 + -1.5 Combine like terms: -9.5 + -1.5 = -11 x = -11 Simplifying x = -11

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8, -11}

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