9z^2+34=36z

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Solution for 9z^2+34=36z equation:


Simplifying
9z2 + 34 = 36z

Reorder the terms:
34 + 9z2 = 36z

Solving
34 + 9z2 = 36z

Solving for variable 'z'.

Reorder the terms:
34 + -36z + 9z2 = 36z + -36z

Combine like terms: 36z + -36z = 0
34 + -36z + 9z2 = 0

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

Divide each side by '9'.
3.777777778 + -4z + z2 = 0

Move the constant term to the right:

Add '-3.777777778' to each side of the equation.
3.777777778 + -4z + -3.777777778 + z2 = 0 + -3.777777778

Reorder the terms:
3.777777778 + -3.777777778 + -4z + z2 = 0 + -3.777777778

Combine like terms: 3.777777778 + -3.777777778 = 0.000000000
0.000000000 + -4z + z2 = 0 + -3.777777778
-4z + z2 = 0 + -3.777777778

Combine like terms: 0 + -3.777777778 = -3.777777778
-4z + z2 = -3.777777778

The z term is -4z.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4z + 4 + z2 = -3.777777778 + 4

Reorder the terms:
4 + -4z + z2 = -3.777777778 + 4

Combine like terms: -3.777777778 + 4 = 0.222222222
4 + -4z + z2 = 0.222222222

Factor a perfect square on the left side:
(z + -2)(z + -2) = 0.222222222

Calculate the square root of the right side: 0.471404521

Break this problem into two subproblems by setting 
(z + -2) equal to 0.471404521 and -0.471404521.

Subproblem 1

z + -2 = 0.471404521 Simplifying z + -2 = 0.471404521 Reorder the terms: -2 + z = 0.471404521 Solving -2 + z = 0.471404521 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + z = 0.471404521 + 2 Combine like terms: -2 + 2 = 0 0 + z = 0.471404521 + 2 z = 0.471404521 + 2 Combine like terms: 0.471404521 + 2 = 2.471404521 z = 2.471404521 Simplifying z = 2.471404521

Subproblem 2

z + -2 = -0.471404521 Simplifying z + -2 = -0.471404521 Reorder the terms: -2 + z = -0.471404521 Solving -2 + z = -0.471404521 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + z = -0.471404521 + 2 Combine like terms: -2 + 2 = 0 0 + z = -0.471404521 + 2 z = -0.471404521 + 2 Combine like terms: -0.471404521 + 2 = 1.528595479 z = 1.528595479 Simplifying z = 1.528595479

Solution

The solution to the problem is based on the solutions from the subproblems. z = {2.471404521, 1.528595479}

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