6x(x-4)-16x^2-(9x-1)=

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Solution for 6x(x-4)-16x^2-(9x-1)= equation:


Simplifying
6x(x + -4) + -16x2 + -1(9x + -1) = 0

Reorder the terms:
6x(-4 + x) + -16x2 + -1(9x + -1) = 0
(-4 * 6x + x * 6x) + -16x2 + -1(9x + -1) = 0
(-24x + 6x2) + -16x2 + -1(9x + -1) = 0

Reorder the terms:
-24x + 6x2 + -16x2 + -1(-1 + 9x) = 0
-24x + 6x2 + -16x2 + (-1 * -1 + 9x * -1) = 0
-24x + 6x2 + -16x2 + (1 + -9x) = 0

Reorder the terms:
1 + -24x + -9x + 6x2 + -16x2 = 0

Combine like terms: -24x + -9x = -33x
1 + -33x + 6x2 + -16x2 = 0

Combine like terms: 6x2 + -16x2 = -10x2
1 + -33x + -10x2 = 0

Solving
1 + -33x + -10x2 = 0

Solving for variable 'x'.

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

Divide each side by '-10'.
-0.1 + 3.3x + x2 = 0.0

Move the constant term to the right:

Add '0.1' to each side of the equation.
-0.1 + 3.3x + 0.1 + x2 = 0.0 + 0.1

Reorder the terms:
-0.1 + 0.1 + 3.3x + x2 = 0.0 + 0.1

Combine like terms: -0.1 + 0.1 = 0.0
0.0 + 3.3x + x2 = 0.0 + 0.1
3.3x + x2 = 0.0 + 0.1

Combine like terms: 0.0 + 0.1 = 0.1
3.3x + x2 = 0.1

The x term is 3.3x.  Take half its coefficient (1.65).
Square it (2.7225) and add it to both sides.

Add '2.7225' to each side of the equation.
3.3x + 2.7225 + x2 = 0.1 + 2.7225

Reorder the terms:
2.7225 + 3.3x + x2 = 0.1 + 2.7225

Combine like terms: 0.1 + 2.7225 = 2.8225
2.7225 + 3.3x + x2 = 2.8225

Factor a perfect square on the left side:
(x + 1.65)(x + 1.65) = 2.8225

Calculate the square root of the right side: 1.680029762

Break this problem into two subproblems by setting 
(x + 1.65) equal to 1.680029762 and -1.680029762.

Subproblem 1

x + 1.65 = 1.680029762 Simplifying x + 1.65 = 1.680029762 Reorder the terms: 1.65 + x = 1.680029762 Solving 1.65 + x = 1.680029762 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.65' to each side of the equation. 1.65 + -1.65 + x = 1.680029762 + -1.65 Combine like terms: 1.65 + -1.65 = 0.00 0.00 + x = 1.680029762 + -1.65 x = 1.680029762 + -1.65 Combine like terms: 1.680029762 + -1.65 = 0.030029762 x = 0.030029762 Simplifying x = 0.030029762

Subproblem 2

x + 1.65 = -1.680029762 Simplifying x + 1.65 = -1.680029762 Reorder the terms: 1.65 + x = -1.680029762 Solving 1.65 + x = -1.680029762 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.65' to each side of the equation. 1.65 + -1.65 + x = -1.680029762 + -1.65 Combine like terms: 1.65 + -1.65 = 0.00 0.00 + x = -1.680029762 + -1.65 x = -1.680029762 + -1.65 Combine like terms: -1.680029762 + -1.65 = -3.330029762 x = -3.330029762 Simplifying x = -3.330029762

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.030029762, -3.330029762}

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