5+i^2-10(5+i)+26=0

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Solution for 5+i^2-10(5+i)+26=0 equation:


Simplifying
5 + i2 + -10(5 + i) + 26 = 0
5 + i2 + (5 * -10 + i * -10) + 26 = 0
5 + i2 + (-50 + -10i) + 26 = 0

Reorder the terms:
5 + -50 + 26 + -10i + i2 = 0

Combine like terms: 5 + -50 = -45
-45 + 26 + -10i + i2 = 0

Combine like terms: -45 + 26 = -19
-19 + -10i + i2 = 0

Solving
-19 + -10i + i2 = 0

Solving for variable 'i'.

Begin completing the square.

Move the constant term to the right:

Add '19' to each side of the equation.
-19 + -10i + 19 + i2 = 0 + 19

Reorder the terms:
-19 + 19 + -10i + i2 = 0 + 19

Combine like terms: -19 + 19 = 0
0 + -10i + i2 = 0 + 19
-10i + i2 = 0 + 19

Combine like terms: 0 + 19 = 19
-10i + i2 = 19

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

Add '25' to each side of the equation.
-10i + 25 + i2 = 19 + 25

Reorder the terms:
25 + -10i + i2 = 19 + 25

Combine like terms: 19 + 25 = 44
25 + -10i + i2 = 44

Factor a perfect square on the left side:
(i + -5)(i + -5) = 44

Calculate the square root of the right side: 6.633249581

Break this problem into two subproblems by setting 
(i + -5) equal to 6.633249581 and -6.633249581.

Subproblem 1

i + -5 = 6.633249581 Simplifying i + -5 = 6.633249581 Reorder the terms: -5 + i = 6.633249581 Solving -5 + i = 6.633249581 Solving for variable 'i'. Move all terms containing i to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + i = 6.633249581 + 5 Combine like terms: -5 + 5 = 0 0 + i = 6.633249581 + 5 i = 6.633249581 + 5 Combine like terms: 6.633249581 + 5 = 11.633249581 i = 11.633249581 Simplifying i = 11.633249581

Subproblem 2

i + -5 = -6.633249581 Simplifying i + -5 = -6.633249581 Reorder the terms: -5 + i = -6.633249581 Solving -5 + i = -6.633249581 Solving for variable 'i'. Move all terms containing i to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + i = -6.633249581 + 5 Combine like terms: -5 + 5 = 0 0 + i = -6.633249581 + 5 i = -6.633249581 + 5 Combine like terms: -6.633249581 + 5 = -1.633249581 i = -1.633249581 Simplifying i = -1.633249581

Solution

The solution to the problem is based on the solutions from the subproblems. i = {11.633249581, -1.633249581}

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