3x(x)-19=37-(x)

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Solution for 3x(x)-19=37-(x) equation:


Simplifying
3x(x) + -19 = 37 + -1(x)

Multiply x * x
3x2 + -19 = 37 + -1(x)

Reorder the terms:
-19 + 3x2 = 37 + -1(x)

Solving
-19 + 3x2 = 37 + -1x

Solving for variable 'x'.

Reorder the terms:
-19 + -37 + x + 3x2 = 37 + -1x + -37 + x

Combine like terms: -19 + -37 = -56
-56 + x + 3x2 = 37 + -1x + -37 + x

Reorder the terms:
-56 + x + 3x2 = 37 + -37 + -1x + x

Combine like terms: 37 + -37 = 0
-56 + x + 3x2 = 0 + -1x + x
-56 + x + 3x2 = -1x + x

Combine like terms: -1x + x = 0
-56 + x + 3x2 = 0

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

Divide each side by '3'.
-18.66666667 + 0.3333333333x + x2 = 0

Move the constant term to the right:

Add '18.66666667' to each side of the equation.
-18.66666667 + 0.3333333333x + 18.66666667 + x2 = 0 + 18.66666667

Reorder the terms:
-18.66666667 + 18.66666667 + 0.3333333333x + x2 = 0 + 18.66666667

Combine like terms: -18.66666667 + 18.66666667 = 0.00000000
0.00000000 + 0.3333333333x + x2 = 0 + 18.66666667
0.3333333333x + x2 = 0 + 18.66666667

Combine like terms: 0 + 18.66666667 = 18.66666667
0.3333333333x + x2 = 18.66666667

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
0.3333333333x + 0.25 + x2 = 18.66666667 + 0.25

Reorder the terms:
0.25 + 0.3333333333x + x2 = 18.66666667 + 0.25

Combine like terms: 18.66666667 + 0.25 = 18.91666667
0.25 + 0.3333333333x + x2 = 18.91666667

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 18.91666667

Calculate the square root of the right side: 4.349329451

Break this problem into two subproblems by setting 
(x + 0.5) equal to 4.349329451 and -4.349329451.

Subproblem 1

x + 0.5 = 4.349329451 Simplifying x + 0.5 = 4.349329451 Reorder the terms: 0.5 + x = 4.349329451 Solving 0.5 + x = 4.349329451 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 4.349329451 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 4.349329451 + -0.5 x = 4.349329451 + -0.5 Combine like terms: 4.349329451 + -0.5 = 3.849329451 x = 3.849329451 Simplifying x = 3.849329451

Subproblem 2

x + 0.5 = -4.349329451 Simplifying x + 0.5 = -4.349329451 Reorder the terms: 0.5 + x = -4.349329451 Solving 0.5 + x = -4.349329451 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -4.349329451 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -4.349329451 + -0.5 x = -4.349329451 + -0.5 Combine like terms: -4.349329451 + -0.5 = -4.849329451 x = -4.849329451 Simplifying x = -4.849329451

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.849329451, -4.849329451}

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