z^2-22z-35=0

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Solution for z^2-22z-35=0 equation:


Simplifying
z2 + -22z + -35 = 0

Reorder the terms:
-35 + -22z + z2 = 0

Solving
-35 + -22z + z2 = 0

Solving for variable 'z'.

Begin completing the square.

Move the constant term to the right:

Add '35' to each side of the equation.
-35 + -22z + 35 + z2 = 0 + 35

Reorder the terms:
-35 + 35 + -22z + z2 = 0 + 35

Combine like terms: -35 + 35 = 0
0 + -22z + z2 = 0 + 35
-22z + z2 = 0 + 35

Combine like terms: 0 + 35 = 35
-22z + z2 = 35

The z term is -22z.  Take half its coefficient (-11).
Square it (121) and add it to both sides.

Add '121' to each side of the equation.
-22z + 121 + z2 = 35 + 121

Reorder the terms:
121 + -22z + z2 = 35 + 121

Combine like terms: 35 + 121 = 156
121 + -22z + z2 = 156

Factor a perfect square on the left side:
(z + -11)(z + -11) = 156

Calculate the square root of the right side: 12.489995997

Break this problem into two subproblems by setting 
(z + -11) equal to 12.489995997 and -12.489995997.

Subproblem 1

z + -11 = 12.489995997 Simplifying z + -11 = 12.489995997 Reorder the terms: -11 + z = 12.489995997 Solving -11 + z = 12.489995997 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '11' to each side of the equation. -11 + 11 + z = 12.489995997 + 11 Combine like terms: -11 + 11 = 0 0 + z = 12.489995997 + 11 z = 12.489995997 + 11 Combine like terms: 12.489995997 + 11 = 23.489995997 z = 23.489995997 Simplifying z = 23.489995997

Subproblem 2

z + -11 = -12.489995997 Simplifying z + -11 = -12.489995997 Reorder the terms: -11 + z = -12.489995997 Solving -11 + z = -12.489995997 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '11' to each side of the equation. -11 + 11 + z = -12.489995997 + 11 Combine like terms: -11 + 11 = 0 0 + z = -12.489995997 + 11 z = -12.489995997 + 11 Combine like terms: -12.489995997 + 11 = -1.489995997 z = -1.489995997 Simplifying z = -1.489995997

Solution

The solution to the problem is based on the solutions from the subproblems. z = {23.489995997, -1.489995997}

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