7x^2+14x-10=6

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Solution for 7x^2+14x-10=6 equation:


Simplifying
7x2 + 14x + -10 = 6

Reorder the terms:
-10 + 14x + 7x2 = 6

Solving
-10 + 14x + 7x2 = 6

Solving for variable 'x'.

Reorder the terms:
-10 + -6 + 14x + 7x2 = 6 + -6

Combine like terms: -10 + -6 = -16
-16 + 14x + 7x2 = 6 + -6

Combine like terms: 6 + -6 = 0
-16 + 14x + 7x2 = 0

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

Divide each side by '7'.
-2.285714286 + 2x + x2 = 0

Move the constant term to the right:

Add '2.285714286' to each side of the equation.
-2.285714286 + 2x + 2.285714286 + x2 = 0 + 2.285714286

Reorder the terms:
-2.285714286 + 2.285714286 + 2x + x2 = 0 + 2.285714286

Combine like terms: -2.285714286 + 2.285714286 = 0.000000000
0.000000000 + 2x + x2 = 0 + 2.285714286
2x + x2 = 0 + 2.285714286

Combine like terms: 0 + 2.285714286 = 2.285714286
2x + x2 = 2.285714286

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = 2.285714286 + 1

Reorder the terms:
1 + 2x + x2 = 2.285714286 + 1

Combine like terms: 2.285714286 + 1 = 3.285714286
1 + 2x + x2 = 3.285714286

Factor a perfect square on the left side:
(x + 1)(x + 1) = 3.285714286

Calculate the square root of the right side: 1.812653934

Break this problem into two subproblems by setting 
(x + 1) equal to 1.812653934 and -1.812653934.

Subproblem 1

x + 1 = 1.812653934 Simplifying x + 1 = 1.812653934 Reorder the terms: 1 + x = 1.812653934 Solving 1 + x = 1.812653934 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 1.812653934 + -1 Combine like terms: 1 + -1 = 0 0 + x = 1.812653934 + -1 x = 1.812653934 + -1 Combine like terms: 1.812653934 + -1 = 0.812653934 x = 0.812653934 Simplifying x = 0.812653934

Subproblem 2

x + 1 = -1.812653934 Simplifying x + 1 = -1.812653934 Reorder the terms: 1 + x = -1.812653934 Solving 1 + x = -1.812653934 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -1.812653934 + -1 Combine like terms: 1 + -1 = 0 0 + x = -1.812653934 + -1 x = -1.812653934 + -1 Combine like terms: -1.812653934 + -1 = -2.812653934 x = -2.812653934 Simplifying x = -2.812653934

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.812653934, -2.812653934}

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