(-10x^2-17x+11)-(12x^2-6x-16)=

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Solution for (-10x^2-17x+11)-(12x^2-6x-16)= equation:


Simplifying
(-10x2 + -17x + 11) + -1(12x2 + -6x + -16) = 0

Reorder the terms:
(11 + -17x + -10x2) + -1(12x2 + -6x + -16) = 0

Remove parenthesis around (11 + -17x + -10x2)
11 + -17x + -10x2 + -1(12x2 + -6x + -16) = 0

Reorder the terms:
11 + -17x + -10x2 + -1(-16 + -6x + 12x2) = 0
11 + -17x + -10x2 + (-16 * -1 + -6x * -1 + 12x2 * -1) = 0
11 + -17x + -10x2 + (16 + 6x + -12x2) = 0

Reorder the terms:
11 + 16 + -17x + 6x + -10x2 + -12x2 = 0

Combine like terms: 11 + 16 = 27
27 + -17x + 6x + -10x2 + -12x2 = 0

Combine like terms: -17x + 6x = -11x
27 + -11x + -10x2 + -12x2 = 0

Combine like terms: -10x2 + -12x2 = -22x2
27 + -11x + -22x2 = 0

Solving
27 + -11x + -22x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-22 the coefficient of the squared term: 

Divide each side by '-22'.
-1.227272727 + 0.5x + x2 = 0

Move the constant term to the right:

Add '1.227272727' to each side of the equation.
-1.227272727 + 0.5x + 1.227272727 + x2 = 0 + 1.227272727

Reorder the terms:
-1.227272727 + 1.227272727 + 0.5x + x2 = 0 + 1.227272727

Combine like terms: -1.227272727 + 1.227272727 = 0.000000000
0.000000000 + 0.5x + x2 = 0 + 1.227272727
0.5x + x2 = 0 + 1.227272727

Combine like terms: 0 + 1.227272727 = 1.227272727
0.5x + x2 = 1.227272727

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 = 1.227272727 + 0.0625

Reorder the terms:
0.0625 + 0.5x + x2 = 1.227272727 + 0.0625

Combine like terms: 1.227272727 + 0.0625 = 1.289772727
0.0625 + 0.5x + x2 = 1.289772727

Factor a perfect square on the left side:
(x + 0.25)(x + 0.25) = 1.289772727

Calculate the square root of the right side: 1.135681613

Break this problem into two subproblems by setting 
(x + 0.25) equal to 1.135681613 and -1.135681613.

Subproblem 1

x + 0.25 = 1.135681613 Simplifying x + 0.25 = 1.135681613 Reorder the terms: 0.25 + x = 1.135681613 Solving 0.25 + x = 1.135681613 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 = 1.135681613 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = 1.135681613 + -0.25 x = 1.135681613 + -0.25 Combine like terms: 1.135681613 + -0.25 = 0.885681613 x = 0.885681613 Simplifying x = 0.885681613

Subproblem 2

x + 0.25 = -1.135681613 Simplifying x + 0.25 = -1.135681613 Reorder the terms: 0.25 + x = -1.135681613 Solving 0.25 + x = -1.135681613 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 = -1.135681613 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = -1.135681613 + -0.25 x = -1.135681613 + -0.25 Combine like terms: -1.135681613 + -0.25 = -1.385681613 x = -1.385681613 Simplifying x = -1.385681613

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.885681613, -1.385681613}

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