10x^2-11-6=(5x+2)

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Solution for 10x^2-11-6=(5x+2) equation:


Simplifying
10x2 + -11 + -6 = (5x + 2)

Reorder the terms:
-11 + -6 + 10x2 = (5x + 2)

Combine like terms: -11 + -6 = -17
-17 + 10x2 = (5x + 2)

Reorder the terms:
-17 + 10x2 = (2 + 5x)

Remove parenthesis around (2 + 5x)
-17 + 10x2 = 2 + 5x

Solving
-17 + 10x2 = 2 + 5x

Solving for variable 'x'.

Reorder the terms:
-17 + -2 + -5x + 10x2 = 2 + 5x + -2 + -5x

Combine like terms: -17 + -2 = -19
-19 + -5x + 10x2 = 2 + 5x + -2 + -5x

Reorder the terms:
-19 + -5x + 10x2 = 2 + -2 + 5x + -5x

Combine like terms: 2 + -2 = 0
-19 + -5x + 10x2 = 0 + 5x + -5x
-19 + -5x + 10x2 = 5x + -5x

Combine like terms: 5x + -5x = 0
-19 + -5x + 10x2 = 0

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

Divide each side by '10'.
-1.9 + -0.5x + x2 = 0

Move the constant term to the right:

Add '1.9' to each side of the equation.
-1.9 + -0.5x + 1.9 + x2 = 0 + 1.9

Reorder the terms:
-1.9 + 1.9 + -0.5x + x2 = 0 + 1.9

Combine like terms: -1.9 + 1.9 = 0.0
0.0 + -0.5x + x2 = 0 + 1.9
-0.5x + x2 = 0 + 1.9

Combine like terms: 0 + 1.9 = 1.9
-0.5x + x2 = 1.9

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 = 1.9 + 0.0625

Reorder the terms:
0.0625 + -0.5x + x2 = 1.9 + 0.0625

Combine like terms: 1.9 + 0.0625 = 1.9625
0.0625 + -0.5x + x2 = 1.9625

Factor a perfect square on the left side:
(x + -0.25)(x + -0.25) = 1.9625

Calculate the square root of the right side: 1.400892573

Break this problem into two subproblems by setting 
(x + -0.25) equal to 1.400892573 and -1.400892573.

Subproblem 1

x + -0.25 = 1.400892573 Simplifying x + -0.25 = 1.400892573 Reorder the terms: -0.25 + x = 1.400892573 Solving -0.25 + x = 1.400892573 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 = 1.400892573 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = 1.400892573 + 0.25 x = 1.400892573 + 0.25 Combine like terms: 1.400892573 + 0.25 = 1.650892573 x = 1.650892573 Simplifying x = 1.650892573

Subproblem 2

x + -0.25 = -1.400892573 Simplifying x + -0.25 = -1.400892573 Reorder the terms: -0.25 + x = -1.400892573 Solving -0.25 + x = -1.400892573 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 = -1.400892573 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = -1.400892573 + 0.25 x = -1.400892573 + 0.25 Combine like terms: -1.400892573 + 0.25 = -1.150892573 x = -1.150892573 Simplifying x = -1.150892573

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.650892573, -1.150892573}

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