23.4918=14x-2x^2

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Solution for 23.4918=14x-2x^2 equation:


Simplifying
23.4918 = 14x + -2x2

Solving
23.4918 = 14x + -2x2

Solving for variable 'x'.

Reorder the terms:
23.4918 + -14x + 2x2 = 14x + -14x + -2x2 + 2x2

Combine like terms: 14x + -14x = 0
23.4918 + -14x + 2x2 = 0 + -2x2 + 2x2
23.4918 + -14x + 2x2 = -2x2 + 2x2

Combine like terms: -2x2 + 2x2 = 0
23.4918 + -14x + 2x2 = 0

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

Divide each side by '2'.
11.7459 + -7x + x2 = 0

Move the constant term to the right:

Add '-11.7459' to each side of the equation.
11.7459 + -7x + -11.7459 + x2 = 0 + -11.7459

Reorder the terms:
11.7459 + -11.7459 + -7x + x2 = 0 + -11.7459

Combine like terms: 11.7459 + -11.7459 = 0.0000
0.0000 + -7x + x2 = 0 + -11.7459
-7x + x2 = 0 + -11.7459

Combine like terms: 0 + -11.7459 = -11.7459
-7x + x2 = -11.7459

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 = -11.7459 + 12.25

Reorder the terms:
12.25 + -7x + x2 = -11.7459 + 12.25

Combine like terms: -11.7459 + 12.25 = 0.5041
12.25 + -7x + x2 = 0.5041

Factor a perfect square on the left side:
(x + -3.5)(x + -3.5) = 0.5041

Calculate the square root of the right side: 0.71

Break this problem into two subproblems by setting 
(x + -3.5) equal to 0.71 and -0.71.

Subproblem 1

x + -3.5 = 0.71 Simplifying x + -3.5 = 0.71 Reorder the terms: -3.5 + x = 0.71 Solving -3.5 + x = 0.71 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 = 0.71 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = 0.71 + 3.5 x = 0.71 + 3.5 Combine like terms: 0.71 + 3.5 = 4.21 x = 4.21 Simplifying x = 4.21

Subproblem 2

x + -3.5 = -0.71 Simplifying x + -3.5 = -0.71 Reorder the terms: -3.5 + x = -0.71 Solving -3.5 + x = -0.71 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 = -0.71 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = -0.71 + 3.5 x = -0.71 + 3.5 Combine like terms: -0.71 + 3.5 = 2.79 x = 2.79 Simplifying x = 2.79

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.21, 2.79}

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