-3x^2-2+5x+11x^2-14x=

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Solution for -3x^2-2+5x+11x^2-14x= equation:


Simplifying
-3x2 + -2 + 5x + 11x2 + -14x = 0

Reorder the terms:
-2 + 5x + -14x + -3x2 + 11x2 = 0

Combine like terms: 5x + -14x = -9x
-2 + -9x + -3x2 + 11x2 = 0

Combine like terms: -3x2 + 11x2 = 8x2
-2 + -9x + 8x2 = 0

Solving
-2 + -9x + 8x2 = 0

Solving for variable 'x'.

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

Divide each side by '8'.
-0.25 + -1.125x + x2 = 0

Move the constant term to the right:

Add '0.25' to each side of the equation.
-0.25 + -1.125x + 0.25 + x2 = 0 + 0.25

Reorder the terms:
-0.25 + 0.25 + -1.125x + x2 = 0 + 0.25

Combine like terms: -0.25 + 0.25 = 0.00
0.00 + -1.125x + x2 = 0 + 0.25
-1.125x + x2 = 0 + 0.25

Combine like terms: 0 + 0.25 = 0.25
-1.125x + x2 = 0.25

The x term is -1.125x.  Take half its coefficient (-0.5625).
Square it (0.31640625) and add it to both sides.

Add '0.31640625' to each side of the equation.
-1.125x + 0.31640625 + x2 = 0.25 + 0.31640625

Reorder the terms:
0.31640625 + -1.125x + x2 = 0.25 + 0.31640625

Combine like terms: 0.25 + 0.31640625 = 0.56640625
0.31640625 + -1.125x + x2 = 0.56640625

Factor a perfect square on the left side:
(x + -0.5625)(x + -0.5625) = 0.56640625

Calculate the square root of the right side: 0.752599661

Break this problem into two subproblems by setting 
(x + -0.5625) equal to 0.752599661 and -0.752599661.

Subproblem 1

x + -0.5625 = 0.752599661 Simplifying x + -0.5625 = 0.752599661 Reorder the terms: -0.5625 + x = 0.752599661 Solving -0.5625 + x = 0.752599661 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5625' to each side of the equation. -0.5625 + 0.5625 + x = 0.752599661 + 0.5625 Combine like terms: -0.5625 + 0.5625 = 0.0000 0.0000 + x = 0.752599661 + 0.5625 x = 0.752599661 + 0.5625 Combine like terms: 0.752599661 + 0.5625 = 1.315099661 x = 1.315099661 Simplifying x = 1.315099661

Subproblem 2

x + -0.5625 = -0.752599661 Simplifying x + -0.5625 = -0.752599661 Reorder the terms: -0.5625 + x = -0.752599661 Solving -0.5625 + x = -0.752599661 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5625' to each side of the equation. -0.5625 + 0.5625 + x = -0.752599661 + 0.5625 Combine like terms: -0.5625 + 0.5625 = 0.0000 0.0000 + x = -0.752599661 + 0.5625 x = -0.752599661 + 0.5625 Combine like terms: -0.752599661 + 0.5625 = -0.190099661 x = -0.190099661 Simplifying x = -0.190099661

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.315099661, -0.190099661}

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