-150+10z+z^2=0

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Solution for -150+10z+z^2=0 equation:


Simplifying
-150 + 10z + z2 = 0

Solving
-150 + 10z + z2 = 0

Solving for variable 'z'.

Begin completing the square.

Move the constant term to the right:

Add '150' to each side of the equation.
-150 + 10z + 150 + z2 = 0 + 150

Reorder the terms:
-150 + 150 + 10z + z2 = 0 + 150

Combine like terms: -150 + 150 = 0
0 + 10z + z2 = 0 + 150
10z + z2 = 0 + 150

Combine like terms: 0 + 150 = 150
10z + z2 = 150

The z term is 10z.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10z + 25 + z2 = 150 + 25

Reorder the terms:
25 + 10z + z2 = 150 + 25

Combine like terms: 150 + 25 = 175
25 + 10z + z2 = 175

Factor a perfect square on the left side:
(z + 5)(z + 5) = 175

Calculate the square root of the right side: 13.228756555

Break this problem into two subproblems by setting 
(z + 5) equal to 13.228756555 and -13.228756555.

Subproblem 1

z + 5 = 13.228756555 Simplifying z + 5 = 13.228756555 Reorder the terms: 5 + z = 13.228756555 Solving 5 + z = 13.228756555 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + z = 13.228756555 + -5 Combine like terms: 5 + -5 = 0 0 + z = 13.228756555 + -5 z = 13.228756555 + -5 Combine like terms: 13.228756555 + -5 = 8.228756555 z = 8.228756555 Simplifying z = 8.228756555

Subproblem 2

z + 5 = -13.228756555 Simplifying z + 5 = -13.228756555 Reorder the terms: 5 + z = -13.228756555 Solving 5 + z = -13.228756555 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + z = -13.228756555 + -5 Combine like terms: 5 + -5 = 0 0 + z = -13.228756555 + -5 z = -13.228756555 + -5 Combine like terms: -13.228756555 + -5 = -18.228756555 z = -18.228756555 Simplifying z = -18.228756555

Solution

The solution to the problem is based on the solutions from the subproblems. z = {8.228756555, -18.228756555}

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