j^2-28j=-29

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Solution for j^2-28j=-29 equation:


Simplifying
j2 + -28j = -29

Reorder the terms:
-28j + j2 = -29

Solving
-28j + j2 = -29

Solving for variable 'j'.

Reorder the terms:
29 + -28j + j2 = -29 + 29

Combine like terms: -29 + 29 = 0
29 + -28j + j2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-29' to each side of the equation.
29 + -28j + -29 + j2 = 0 + -29

Reorder the terms:
29 + -29 + -28j + j2 = 0 + -29

Combine like terms: 29 + -29 = 0
0 + -28j + j2 = 0 + -29
-28j + j2 = 0 + -29

Combine like terms: 0 + -29 = -29
-28j + j2 = -29

The j term is -28j.  Take half its coefficient (-14).
Square it (196) and add it to both sides.

Add '196' to each side of the equation.
-28j + 196 + j2 = -29 + 196

Reorder the terms:
196 + -28j + j2 = -29 + 196

Combine like terms: -29 + 196 = 167
196 + -28j + j2 = 167

Factor a perfect square on the left side:
(j + -14)(j + -14) = 167

Calculate the square root of the right side: 12.922847983

Break this problem into two subproblems by setting 
(j + -14) equal to 12.922847983 and -12.922847983.

Subproblem 1

j + -14 = 12.922847983 Simplifying j + -14 = 12.922847983 Reorder the terms: -14 + j = 12.922847983 Solving -14 + j = 12.922847983 Solving for variable 'j'. Move all terms containing j to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + j = 12.922847983 + 14 Combine like terms: -14 + 14 = 0 0 + j = 12.922847983 + 14 j = 12.922847983 + 14 Combine like terms: 12.922847983 + 14 = 26.922847983 j = 26.922847983 Simplifying j = 26.922847983

Subproblem 2

j + -14 = -12.922847983 Simplifying j + -14 = -12.922847983 Reorder the terms: -14 + j = -12.922847983 Solving -14 + j = -12.922847983 Solving for variable 'j'. Move all terms containing j to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + j = -12.922847983 + 14 Combine like terms: -14 + 14 = 0 0 + j = -12.922847983 + 14 j = -12.922847983 + 14 Combine like terms: -12.922847983 + 14 = 1.077152017 j = 1.077152017 Simplifying j = 1.077152017

Solution

The solution to the problem is based on the solutions from the subproblems. j = {26.922847983, 1.077152017}

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