9z+3(4z^2+-2)-(-3z+z-2)=

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Solution for 9z+3(4z^2+-2)-(-3z+z-2)= equation:


Simplifying
9z + 3(4z2 + -2) + -1(-3z + z + -2) = 0

Reorder the terms:
9z + 3(-2 + 4z2) + -1(-3z + z + -2) = 0
9z + (-2 * 3 + 4z2 * 3) + -1(-3z + z + -2) = 0
9z + (-6 + 12z2) + -1(-3z + z + -2) = 0

Reorder the terms:
9z + -6 + 12z2 + -1(-2 + -3z + z) = 0

Combine like terms: -3z + z = -2z
9z + -6 + 12z2 + -1(-2 + -2z) = 0
9z + -6 + 12z2 + (-2 * -1 + -2z * -1) = 0
9z + -6 + 12z2 + (2 + 2z) = 0

Reorder the terms:
-6 + 2 + 9z + 2z + 12z2 = 0

Combine like terms: -6 + 2 = -4
-4 + 9z + 2z + 12z2 = 0

Combine like terms: 9z + 2z = 11z
-4 + 11z + 12z2 = 0

Solving
-4 + 11z + 12z2 = 0

Solving for variable 'z'.

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

Divide each side by '12'.
-0.3333333333 + 0.9166666667z + z2 = 0

Move the constant term to the right:

Add '0.3333333333' to each side of the equation.
-0.3333333333 + 0.9166666667z + 0.3333333333 + z2 = 0 + 0.3333333333

Reorder the terms:
-0.3333333333 + 0.3333333333 + 0.9166666667z + z2 = 0 + 0.3333333333

Combine like terms: -0.3333333333 + 0.3333333333 = 0.0000000000
0.0000000000 + 0.9166666667z + z2 = 0 + 0.3333333333
0.9166666667z + z2 = 0 + 0.3333333333

Combine like terms: 0 + 0.3333333333 = 0.3333333333
0.9166666667z + z2 = 0.3333333333

The z term is 0.9166666667z.  Take half its coefficient (0.4583333334).
Square it (0.2100694445) and add it to both sides.

Add '0.2100694445' to each side of the equation.
0.9166666667z + 0.2100694445 + z2 = 0.3333333333 + 0.2100694445

Reorder the terms:
0.2100694445 + 0.9166666667z + z2 = 0.3333333333 + 0.2100694445

Combine like terms: 0.3333333333 + 0.2100694445 = 0.5434027778
0.2100694445 + 0.9166666667z + z2 = 0.5434027778

Factor a perfect square on the left side:
(z + 0.4583333334)(z + 0.4583333334) = 0.5434027778

Calculate the square root of the right side: 0.737158584

Break this problem into two subproblems by setting 
(z + 0.4583333334) equal to 0.737158584 and -0.737158584.

Subproblem 1

z + 0.4583333334 = 0.737158584 Simplifying z + 0.4583333334 = 0.737158584 Reorder the terms: 0.4583333334 + z = 0.737158584 Solving 0.4583333334 + z = 0.737158584 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-0.4583333334' to each side of the equation. 0.4583333334 + -0.4583333334 + z = 0.737158584 + -0.4583333334 Combine like terms: 0.4583333334 + -0.4583333334 = 0.0000000000 0.0000000000 + z = 0.737158584 + -0.4583333334 z = 0.737158584 + -0.4583333334 Combine like terms: 0.737158584 + -0.4583333334 = 0.2788252506 z = 0.2788252506 Simplifying z = 0.2788252506

Subproblem 2

z + 0.4583333334 = -0.737158584 Simplifying z + 0.4583333334 = -0.737158584 Reorder the terms: 0.4583333334 + z = -0.737158584 Solving 0.4583333334 + z = -0.737158584 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-0.4583333334' to each side of the equation. 0.4583333334 + -0.4583333334 + z = -0.737158584 + -0.4583333334 Combine like terms: 0.4583333334 + -0.4583333334 = 0.0000000000 0.0000000000 + z = -0.737158584 + -0.4583333334 z = -0.737158584 + -0.4583333334 Combine like terms: -0.737158584 + -0.4583333334 = -1.1954919174 z = -1.1954919174 Simplifying z = -1.1954919174

Solution

The solution to the problem is based on the solutions from the subproblems. z = {0.2788252506, -1.1954919174}

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