2x^2+19=14x

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Solution for 2x^2+19=14x equation:


Simplifying
2x2 + 19 = 14x

Reorder the terms:
19 + 2x2 = 14x

Solving
19 + 2x2 = 14x

Solving for variable 'x'.

Reorder the terms:
19 + -14x + 2x2 = 14x + -14x

Combine like terms: 14x + -14x = 0
19 + -14x + 2x2 = 0

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

Divide each side by '2'.
9.5 + -7x + x2 = 0

Move the constant term to the right:

Add '-9.5' to each side of the equation.
9.5 + -7x + -9.5 + x2 = 0 + -9.5

Reorder the terms:
9.5 + -9.5 + -7x + x2 = 0 + -9.5

Combine like terms: 9.5 + -9.5 = 0.0
0.0 + -7x + x2 = 0 + -9.5
-7x + x2 = 0 + -9.5

Combine like terms: 0 + -9.5 = -9.5
-7x + x2 = -9.5

The x term is -7x.  Take half its coefficient (-3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
-7x + 12.25 + x2 = -9.5 + 12.25

Reorder the terms:
12.25 + -7x + x2 = -9.5 + 12.25

Combine like terms: -9.5 + 12.25 = 2.75
12.25 + -7x + x2 = 2.75

Factor a perfect square on the left side:
(x + -3.5)(x + -3.5) = 2.75

Calculate the square root of the right side: 1.658312395

Break this problem into two subproblems by setting 
(x + -3.5) equal to 1.658312395 and -1.658312395.

Subproblem 1

x + -3.5 = 1.658312395 Simplifying x + -3.5 = 1.658312395 Reorder the terms: -3.5 + x = 1.658312395 Solving -3.5 + x = 1.658312395 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + x = 1.658312395 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = 1.658312395 + 3.5 x = 1.658312395 + 3.5 Combine like terms: 1.658312395 + 3.5 = 5.158312395 x = 5.158312395 Simplifying x = 5.158312395

Subproblem 2

x + -3.5 = -1.658312395 Simplifying x + -3.5 = -1.658312395 Reorder the terms: -3.5 + x = -1.658312395 Solving -3.5 + x = -1.658312395 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + x = -1.658312395 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = -1.658312395 + 3.5 x = -1.658312395 + 3.5 Combine like terms: -1.658312395 + 3.5 = 1.841687605 x = 1.841687605 Simplifying x = 1.841687605

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.158312395, 1.841687605}

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