(-12z^2-z+3)+(2z^2+6z-1)=

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Solution for (-12z^2-z+3)+(2z^2+6z-1)= equation:


Simplifying
(-12z2 + -1z + 3) + (2z2 + 6z + -1) = 0

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

Remove parenthesis around (3 + -1z + -12z2)
3 + -1z + -12z2 + (2z2 + 6z + -1) = 0

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

Remove parenthesis around (-1 + 6z + 2z2)
3 + -1z + -12z2 + -1 + 6z + 2z2 = 0

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

Combine like terms: 3 + -1 = 2
2 + -1z + 6z + -12z2 + 2z2 = 0

Combine like terms: -1z + 6z = 5z
2 + 5z + -12z2 + 2z2 = 0

Combine like terms: -12z2 + 2z2 = -10z2
2 + 5z + -10z2 = 0

Solving
2 + 5z + -10z2 = 0

Solving for variable 'z'.

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

Divide each side by '-10'.
-0.2 + -0.5z + z2 = 0.0

Move the constant term to the right:

Add '0.2' to each side of the equation.
-0.2 + -0.5z + 0.2 + z2 = 0.0 + 0.2

Reorder the terms:
-0.2 + 0.2 + -0.5z + z2 = 0.0 + 0.2

Combine like terms: -0.2 + 0.2 = 0.0
0.0 + -0.5z + z2 = 0.0 + 0.2
-0.5z + z2 = 0.0 + 0.2

Combine like terms: 0.0 + 0.2 = 0.2
-0.5z + z2 = 0.2

The z term is -0.5z.  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.
-0.5z + 0.0625 + z2 = 0.2 + 0.0625

Reorder the terms:
0.0625 + -0.5z + z2 = 0.2 + 0.0625

Combine like terms: 0.2 + 0.0625 = 0.2625
0.0625 + -0.5z + z2 = 0.2625

Factor a perfect square on the left side:
(z + -0.25)(z + -0.25) = 0.2625

Calculate the square root of the right side: 0.512347538

Break this problem into two subproblems by setting 
(z + -0.25) equal to 0.512347538 and -0.512347538.

Subproblem 1

z + -0.25 = 0.512347538 Simplifying z + -0.25 = 0.512347538 Reorder the terms: -0.25 + z = 0.512347538 Solving -0.25 + z = 0.512347538 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + z = 0.512347538 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + z = 0.512347538 + 0.25 z = 0.512347538 + 0.25 Combine like terms: 0.512347538 + 0.25 = 0.762347538 z = 0.762347538 Simplifying z = 0.762347538

Subproblem 2

z + -0.25 = -0.512347538 Simplifying z + -0.25 = -0.512347538 Reorder the terms: -0.25 + z = -0.512347538 Solving -0.25 + z = -0.512347538 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + z = -0.512347538 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + z = -0.512347538 + 0.25 z = -0.512347538 + 0.25 Combine like terms: -0.512347538 + 0.25 = -0.262347538 z = -0.262347538 Simplifying z = -0.262347538

Solution

The solution to the problem is based on the solutions from the subproblems. z = {0.762347538, -0.262347538}

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