-i(8-2i)-(5-9i)=

Simple and best practice solution for -i(8-2i)-(5-9i)= equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for -i(8-2i)-(5-9i)= equation:


Simplifying
-1i(8 + -2i) + -1(5 + -9i) = 0
(8 * -1i + -2i * -1i) + -1(5 + -9i) = 0
(-8i + 2i2) + -1(5 + -9i) = 0
-8i + 2i2 + (5 * -1 + -9i * -1) = 0
-8i + 2i2 + (-5 + 9i) = 0

Reorder the terms:
-5 + -8i + 9i + 2i2 = 0

Combine like terms: -8i + 9i = 1i
-5 + 1i + 2i2 = 0

Solving
-5 + 1i + 2i2 = 0

Solving for variable 'i'.

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
-2.5 + 0.5i + i2 = 0

Move the constant term to the right:

Add '2.5' to each side of the equation.
-2.5 + 0.5i + 2.5 + i2 = 0 + 2.5

Reorder the terms:
-2.5 + 2.5 + 0.5i + i2 = 0 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + 0.5i + i2 = 0 + 2.5
0.5i + i2 = 0 + 2.5

Combine like terms: 0 + 2.5 = 2.5
0.5i + i2 = 2.5

The i term is 0.5i.  Take half its coefficient (0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
0.5i + 0.0625 + i2 = 2.5 + 0.0625

Reorder the terms:
0.0625 + 0.5i + i2 = 2.5 + 0.0625

Combine like terms: 2.5 + 0.0625 = 2.5625
0.0625 + 0.5i + i2 = 2.5625

Factor a perfect square on the left side:
(i + 0.25)(i + 0.25) = 2.5625

Calculate the square root of the right side: 1.600781059

Break this problem into two subproblems by setting 
(i + 0.25) equal to 1.600781059 and -1.600781059.

Subproblem 1

i + 0.25 = 1.600781059 Simplifying i + 0.25 = 1.600781059 Reorder the terms: 0.25 + i = 1.600781059 Solving 0.25 + i = 1.600781059 Solving for variable 'i'. Move all terms containing i to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + i = 1.600781059 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + i = 1.600781059 + -0.25 i = 1.600781059 + -0.25 Combine like terms: 1.600781059 + -0.25 = 1.350781059 i = 1.350781059 Simplifying i = 1.350781059

Subproblem 2

i + 0.25 = -1.600781059 Simplifying i + 0.25 = -1.600781059 Reorder the terms: 0.25 + i = -1.600781059 Solving 0.25 + i = -1.600781059 Solving for variable 'i'. Move all terms containing i to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + i = -1.600781059 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + i = -1.600781059 + -0.25 i = -1.600781059 + -0.25 Combine like terms: -1.600781059 + -0.25 = -1.850781059 i = -1.850781059 Simplifying i = -1.850781059

Solution

The solution to the problem is based on the solutions from the subproblems. i = {1.350781059, -1.850781059}

See similar equations:

| w^2+3w-114=0 | | .5*x=50 | | 8y+2(y-8)=4(y+1)-3 | | -3c-4=-40 | | 4x^2-9x=6 | | 4x(x+9)=0 | | (6k+5)-(2k-1)= | | 2x^2=-5x-3 | | 4(3+3x)=-3(2-5x) | | .2x=31 | | 1/5x=2/7 | | 3/4=9x | | -7m/10=21 | | 15x=18+12x | | 5/8y=-1 | | 5a/8=25 | | .4x=18 | | -20m^4n^-10/4m^-4n^-5 | | 3y/7=6 | | m/5=10 | | 2r/7=12 | | 5xm=35 | | 6(t-6)+8t=7(2t+4)-10 | | 8y+3(y-3)=5(y+1)-3 | | X-11=y | | 5x+1=-26+2x | | 2y/524 | | 3x/5=-12 | | 18/s=3 | | -a/1=8 | | -2y-17=5y+18 | | 1=8x+b |

Equations solver categories