1-i+i^2=0.75

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Solution for 1-i+i^2=0.75 equation:


Simplifying
1 + -1i + i2 = 0.75

Solving
1 + -1i + i2 = 0.75

Solving for variable 'i'.

Reorder the terms:
1 + -0.75 + -1i + i2 = 0.75 + -0.75

Combine like terms: 1 + -0.75 = 0.25
0.25 + -1i + i2 = 0.75 + -0.75

Combine like terms: 0.75 + -0.75 = 0.00
0.25 + -1i + i2 = 0.00

Begin completing the square.

Move the constant term to the right:

Add '-0.25' to each side of the equation.
0.25 + -1i + -0.25 + i2 = 0.00 + -0.25

Reorder the terms:
0.25 + -0.25 + -1i + i2 = 0.00 + -0.25

Combine like terms: 0.25 + -0.25 = 0.00
0.00 + -1i + i2 = 0.00 + -0.25
-1i + i2 = 0.00 + -0.25

Combine like terms: 0.00 + -0.25 = -0.25
-1i + i2 = -0.25

The i term is -1i.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1i + 0.25 + i2 = -0.25 + 0.25

Reorder the terms:
0.25 + -1i + i2 = -0.25 + 0.25

Combine like terms: -0.25 + 0.25 = 0.00
0.25 + -1i + i2 = 0.00

Factor a perfect square on the left side:
(i + -0.5)(i + -0.5) = 0.00

Calculate the square root of the right side: 0.00

Break this problem into two subproblems by setting 
(i + -0.5) equal to 0.00 and 0.00.

Subproblem 1

i + -0.5 = 0.00 Simplifying i + -0.5 = 0.00 Reorder the terms: -0.5 + i = 0.00 Solving -0.5 + i = 0.00 Solving for variable 'i'. Move all terms containing i to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + i = 0.00 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + i = 0.00 + 0.5 i = 0.00 + 0.5 Combine like terms: 0.00 + 0.5 = 0.5 i = 0.5 Simplifying i = 0.5

Subproblem 2

i + -0.5 = 0.00 Simplifying i + -0.5 = 0.00 Reorder the terms: -0.5 + i = 0.00 Solving -0.5 + i = 0.00 Solving for variable 'i'. Move all terms containing i to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + i = 0.00 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + i = 0.00 + 0.5 i = 0.00 + 0.5 Combine like terms: 0.00 + 0.5 = 0.5 i = 0.5 Simplifying i = 0.5

Solution

The solution to the problem is based on the solutions from the subproblems. i = {0.5, 0.5}

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