j^2-22j+45=0

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Solution for j^2-22j+45=0 equation:


Simplifying
j2 + -22j + 45 = 0

Reorder the terms:
45 + -22j + j2 = 0

Solving
45 + -22j + j2 = 0

Solving for variable 'j'.

Begin completing the square.

Move the constant term to the right:

Add '-45' to each side of the equation.
45 + -22j + -45 + j2 = 0 + -45

Reorder the terms:
45 + -45 + -22j + j2 = 0 + -45

Combine like terms: 45 + -45 = 0
0 + -22j + j2 = 0 + -45
-22j + j2 = 0 + -45

Combine like terms: 0 + -45 = -45
-22j + j2 = -45

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

Add '121' to each side of the equation.
-22j + 121 + j2 = -45 + 121

Reorder the terms:
121 + -22j + j2 = -45 + 121

Combine like terms: -45 + 121 = 76
121 + -22j + j2 = 76

Factor a perfect square on the left side:
(j + -11)(j + -11) = 76

Calculate the square root of the right side: 8.717797887

Break this problem into two subproblems by setting 
(j + -11) equal to 8.717797887 and -8.717797887.

Subproblem 1

j + -11 = 8.717797887 Simplifying j + -11 = 8.717797887 Reorder the terms: -11 + j = 8.717797887 Solving -11 + j = 8.717797887 Solving for variable 'j'. Move all terms containing j to the left, all other terms to the right. Add '11' to each side of the equation. -11 + 11 + j = 8.717797887 + 11 Combine like terms: -11 + 11 = 0 0 + j = 8.717797887 + 11 j = 8.717797887 + 11 Combine like terms: 8.717797887 + 11 = 19.717797887 j = 19.717797887 Simplifying j = 19.717797887

Subproblem 2

j + -11 = -8.717797887 Simplifying j + -11 = -8.717797887 Reorder the terms: -11 + j = -8.717797887 Solving -11 + j = -8.717797887 Solving for variable 'j'. Move all terms containing j to the left, all other terms to the right. Add '11' to each side of the equation. -11 + 11 + j = -8.717797887 + 11 Combine like terms: -11 + 11 = 0 0 + j = -8.717797887 + 11 j = -8.717797887 + 11 Combine like terms: -8.717797887 + 11 = 2.282202113 j = 2.282202113 Simplifying j = 2.282202113

Solution

The solution to the problem is based on the solutions from the subproblems. j = {19.717797887, 2.282202113}

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