4z^2-29z-4=

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Solution for 4z^2-29z-4= equation:


Simplifying
4z2 + -29z + -4 = 0

Reorder the terms:
-4 + -29z + 4z2 = 0

Solving
-4 + -29z + 4z2 = 0

Solving for variable 'z'.

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

Divide each side by '4'.
-1 + -7.25z + z2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + -7.25z + 1 + z2 = 0 + 1

Reorder the terms:
-1 + 1 + -7.25z + z2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -7.25z + z2 = 0 + 1
-7.25z + z2 = 0 + 1

Combine like terms: 0 + 1 = 1
-7.25z + z2 = 1

The z term is -7.25z.  Take half its coefficient (-3.625).
Square it (13.140625) and add it to both sides.

Add '13.140625' to each side of the equation.
-7.25z + 13.140625 + z2 = 1 + 13.140625

Reorder the terms:
13.140625 + -7.25z + z2 = 1 + 13.140625

Combine like terms: 1 + 13.140625 = 14.140625
13.140625 + -7.25z + z2 = 14.140625

Factor a perfect square on the left side:
(z + -3.625)(z + -3.625) = 14.140625

Calculate the square root of the right side: 3.760402239

Break this problem into two subproblems by setting 
(z + -3.625) equal to 3.760402239 and -3.760402239.

Subproblem 1

z + -3.625 = 3.760402239 Simplifying z + -3.625 = 3.760402239 Reorder the terms: -3.625 + z = 3.760402239 Solving -3.625 + z = 3.760402239 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '3.625' to each side of the equation. -3.625 + 3.625 + z = 3.760402239 + 3.625 Combine like terms: -3.625 + 3.625 = 0.000 0.000 + z = 3.760402239 + 3.625 z = 3.760402239 + 3.625 Combine like terms: 3.760402239 + 3.625 = 7.385402239 z = 7.385402239 Simplifying z = 7.385402239

Subproblem 2

z + -3.625 = -3.760402239 Simplifying z + -3.625 = -3.760402239 Reorder the terms: -3.625 + z = -3.760402239 Solving -3.625 + z = -3.760402239 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '3.625' to each side of the equation. -3.625 + 3.625 + z = -3.760402239 + 3.625 Combine like terms: -3.625 + 3.625 = 0.000 0.000 + z = -3.760402239 + 3.625 z = -3.760402239 + 3.625 Combine like terms: -3.760402239 + 3.625 = -0.135402239 z = -0.135402239 Simplifying z = -0.135402239

Solution

The solution to the problem is based on the solutions from the subproblems. z = {7.385402239, -0.135402239}

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