14x*x+7x-170=0

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Solution for 14x*x+7x-170=0 equation:


Simplifying
14x * x + 7x + -170 = 0

Multiply x * x
14x2 + 7x + -170 = 0

Reorder the terms:
-170 + 7x + 14x2 = 0

Solving
-170 + 7x + 14x2 = 0

Solving for variable 'x'.

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

Divide each side by '14'.
-12.14285714 + 0.5x + x2 = 0

Move the constant term to the right:

Add '12.14285714' to each side of the equation.
-12.14285714 + 0.5x + 12.14285714 + x2 = 0 + 12.14285714

Reorder the terms:
-12.14285714 + 12.14285714 + 0.5x + x2 = 0 + 12.14285714

Combine like terms: -12.14285714 + 12.14285714 = 0.00000000
0.00000000 + 0.5x + x2 = 0 + 12.14285714
0.5x + x2 = 0 + 12.14285714

Combine like terms: 0 + 12.14285714 = 12.14285714
0.5x + x2 = 12.14285714

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 = 12.14285714 + 0.0625

Reorder the terms:
0.0625 + 0.5x + x2 = 12.14285714 + 0.0625

Combine like terms: 12.14285714 + 0.0625 = 12.20535714
0.0625 + 0.5x + x2 = 12.20535714

Factor a perfect square on the left side:
(x + 0.25)(x + 0.25) = 12.20535714

Calculate the square root of the right side: 3.493616628

Break this problem into two subproblems by setting 
(x + 0.25) equal to 3.493616628 and -3.493616628.

Subproblem 1

x + 0.25 = 3.493616628 Simplifying x + 0.25 = 3.493616628 Reorder the terms: 0.25 + x = 3.493616628 Solving 0.25 + x = 3.493616628 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 = 3.493616628 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = 3.493616628 + -0.25 x = 3.493616628 + -0.25 Combine like terms: 3.493616628 + -0.25 = 3.243616628 x = 3.243616628 Simplifying x = 3.243616628

Subproblem 2

x + 0.25 = -3.493616628 Simplifying x + 0.25 = -3.493616628 Reorder the terms: 0.25 + x = -3.493616628 Solving 0.25 + x = -3.493616628 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 = -3.493616628 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = -3.493616628 + -0.25 x = -3.493616628 + -0.25 Combine like terms: -3.493616628 + -0.25 = -3.743616628 x = -3.743616628 Simplifying x = -3.743616628

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.243616628, -3.743616628}

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