b^2-18b+50=-10

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Solution for b^2-18b+50=-10 equation:


Simplifying
b2 + -18b + 50 = -10

Reorder the terms:
50 + -18b + b2 = -10

Solving
50 + -18b + b2 = -10

Solving for variable 'b'.

Reorder the terms:
50 + 10 + -18b + b2 = -10 + 10

Combine like terms: 50 + 10 = 60
60 + -18b + b2 = -10 + 10

Combine like terms: -10 + 10 = 0
60 + -18b + b2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-60' to each side of the equation.
60 + -18b + -60 + b2 = 0 + -60

Reorder the terms:
60 + -60 + -18b + b2 = 0 + -60

Combine like terms: 60 + -60 = 0
0 + -18b + b2 = 0 + -60
-18b + b2 = 0 + -60

Combine like terms: 0 + -60 = -60
-18b + b2 = -60

The b term is -18b.  Take half its coefficient (-9).
Square it (81) and add it to both sides.

Add '81' to each side of the equation.
-18b + 81 + b2 = -60 + 81

Reorder the terms:
81 + -18b + b2 = -60 + 81

Combine like terms: -60 + 81 = 21
81 + -18b + b2 = 21

Factor a perfect square on the left side:
(b + -9)(b + -9) = 21

Calculate the square root of the right side: 4.582575695

Break this problem into two subproblems by setting 
(b + -9) equal to 4.582575695 and -4.582575695.

Subproblem 1

b + -9 = 4.582575695 Simplifying b + -9 = 4.582575695 Reorder the terms: -9 + b = 4.582575695 Solving -9 + b = 4.582575695 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + b = 4.582575695 + 9 Combine like terms: -9 + 9 = 0 0 + b = 4.582575695 + 9 b = 4.582575695 + 9 Combine like terms: 4.582575695 + 9 = 13.582575695 b = 13.582575695 Simplifying b = 13.582575695

Subproblem 2

b + -9 = -4.582575695 Simplifying b + -9 = -4.582575695 Reorder the terms: -9 + b = -4.582575695 Solving -9 + b = -4.582575695 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + b = -4.582575695 + 9 Combine like terms: -9 + 9 = 0 0 + b = -4.582575695 + 9 b = -4.582575695 + 9 Combine like terms: -4.582575695 + 9 = 4.417424305 b = 4.417424305 Simplifying b = 4.417424305

Solution

The solution to the problem is based on the solutions from the subproblems. b = {13.582575695, 4.417424305}

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