3x^2-5-14x^2+13+8x=

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Solution for 3x^2-5-14x^2+13+8x= equation:


Simplifying
3x2 + -5 + -14x2 + 13 + 8x = 0

Reorder the terms:
-5 + 13 + 8x + 3x2 + -14x2 = 0

Combine like terms: -5 + 13 = 8
8 + 8x + 3x2 + -14x2 = 0

Combine like terms: 3x2 + -14x2 = -11x2
8 + 8x + -11x2 = 0

Solving
8 + 8x + -11x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-11 the coefficient of the squared term: 

Divide each side by '-11'.
-0.7272727273 + -0.7272727273x + x2 = 0

Move the constant term to the right:

Add '0.7272727273' to each side of the equation.
-0.7272727273 + -0.7272727273x + 0.7272727273 + x2 = 0 + 0.7272727273

Reorder the terms:
-0.7272727273 + 0.7272727273 + -0.7272727273x + x2 = 0 + 0.7272727273

Combine like terms: -0.7272727273 + 0.7272727273 = 0.0000000000
0.0000000000 + -0.7272727273x + x2 = 0 + 0.7272727273
-0.7272727273x + x2 = 0 + 0.7272727273

Combine like terms: 0 + 0.7272727273 = 0.7272727273
-0.7272727273x + x2 = 0.7272727273

The x term is -0.7272727273x.  Take half its coefficient (-0.3636363637).
Square it (0.1322314050) and add it to both sides.

Add '0.1322314050' to each side of the equation.
-0.7272727273x + 0.1322314050 + x2 = 0.7272727273 + 0.1322314050

Reorder the terms:
0.1322314050 + -0.7272727273x + x2 = 0.7272727273 + 0.1322314050

Combine like terms: 0.7272727273 + 0.1322314050 = 0.8595041323
0.1322314050 + -0.7272727273x + x2 = 0.8595041323

Factor a perfect square on the left side:
(x + -0.3636363637)(x + -0.3636363637) = 0.8595041323

Calculate the square root of the right side: 0.927094457

Break this problem into two subproblems by setting 
(x + -0.3636363637) equal to 0.927094457 and -0.927094457.

Subproblem 1

x + -0.3636363637 = 0.927094457 Simplifying x + -0.3636363637 = 0.927094457 Reorder the terms: -0.3636363637 + x = 0.927094457 Solving -0.3636363637 + x = 0.927094457 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3636363637' to each side of the equation. -0.3636363637 + 0.3636363637 + x = 0.927094457 + 0.3636363637 Combine like terms: -0.3636363637 + 0.3636363637 = 0.0000000000 0.0000000000 + x = 0.927094457 + 0.3636363637 x = 0.927094457 + 0.3636363637 Combine like terms: 0.927094457 + 0.3636363637 = 1.2907308207 x = 1.2907308207 Simplifying x = 1.2907308207

Subproblem 2

x + -0.3636363637 = -0.927094457 Simplifying x + -0.3636363637 = -0.927094457 Reorder the terms: -0.3636363637 + x = -0.927094457 Solving -0.3636363637 + x = -0.927094457 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3636363637' to each side of the equation. -0.3636363637 + 0.3636363637 + x = -0.927094457 + 0.3636363637 Combine like terms: -0.3636363637 + 0.3636363637 = 0.0000000000 0.0000000000 + x = -0.927094457 + 0.3636363637 x = -0.927094457 + 0.3636363637 Combine like terms: -0.927094457 + 0.3636363637 = -0.5634580933 x = -0.5634580933 Simplifying x = -0.5634580933

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.2907308207, -0.5634580933}

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