10x^2-5x-14=0

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Solution for 10x^2-5x-14=0 equation:


Simplifying
10x2 + -5x + -14 = 0

Reorder the terms:
-14 + -5x + 10x2 = 0

Solving
-14 + -5x + 10x2 = 0

Solving for variable 'x'.

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

Divide each side by '10'.
-1.4 + -0.5x + x2 = 0

Move the constant term to the right:

Add '1.4' to each side of the equation.
-1.4 + -0.5x + 1.4 + x2 = 0 + 1.4

Reorder the terms:
-1.4 + 1.4 + -0.5x + x2 = 0 + 1.4

Combine like terms: -1.4 + 1.4 = 0.0
0.0 + -0.5x + x2 = 0 + 1.4
-0.5x + x2 = 0 + 1.4

Combine like terms: 0 + 1.4 = 1.4
-0.5x + x2 = 1.4

The x term is -0.5x.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5x + 0.0625 + x2 = 1.4 + 0.0625

Reorder the terms:
0.0625 + -0.5x + x2 = 1.4 + 0.0625

Combine like terms: 1.4 + 0.0625 = 1.4625
0.0625 + -0.5x + x2 = 1.4625

Factor a perfect square on the left side:
(x + -0.25)(x + -0.25) = 1.4625

Calculate the square root of the right side: 1.209338662

Break this problem into two subproblems by setting 
(x + -0.25) equal to 1.209338662 and -1.209338662.

Subproblem 1

x + -0.25 = 1.209338662 Simplifying x + -0.25 = 1.209338662 Reorder the terms: -0.25 + x = 1.209338662 Solving -0.25 + x = 1.209338662 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = 1.209338662 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = 1.209338662 + 0.25 x = 1.209338662 + 0.25 Combine like terms: 1.209338662 + 0.25 = 1.459338662 x = 1.459338662 Simplifying x = 1.459338662

Subproblem 2

x + -0.25 = -1.209338662 Simplifying x + -0.25 = -1.209338662 Reorder the terms: -0.25 + x = -1.209338662 Solving -0.25 + x = -1.209338662 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = -1.209338662 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = -1.209338662 + 0.25 x = -1.209338662 + 0.25 Combine like terms: -1.209338662 + 0.25 = -0.959338662 x = -0.959338662 Simplifying x = -0.959338662

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.459338662, -0.959338662}

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