j+1=4(j-2)4j

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Solution for j+1=4(j-2)4j equation:


Simplifying
j + 1 = 4(j + -2) * 4j

Reorder the terms:
1 + j = 4(j + -2) * 4j

Reorder the terms:
1 + j = 4(-2 + j) * 4j

Reorder the terms for easier multiplication:
1 + j = 4 * 4j(-2 + j)

Multiply 4 * 4
1 + j = 16j(-2 + j)
1 + j = (-2 * 16j + j * 16j)
1 + j = (-32j + 16j2)

Solving
1 + j = -32j + 16j2

Solving for variable 'j'.

Combine like terms: j + 32j = 33j
1 + 33j + -16j2 = -32j + 16j2 + 32j + -16j2

Reorder the terms:
1 + 33j + -16j2 = -32j + 32j + 16j2 + -16j2

Combine like terms: -32j + 32j = 0
1 + 33j + -16j2 = 0 + 16j2 + -16j2
1 + 33j + -16j2 = 16j2 + -16j2

Combine like terms: 16j2 + -16j2 = 0
1 + 33j + -16j2 = 0

Begin completing the square.  Divide all terms by
-16 the coefficient of the squared term: 

Divide each side by '-16'.
-0.0625 + -2.0625j + j2 = 0

Move the constant term to the right:

Add '0.0625' to each side of the equation.
-0.0625 + -2.0625j + 0.0625 + j2 = 0 + 0.0625

Reorder the terms:
-0.0625 + 0.0625 + -2.0625j + j2 = 0 + 0.0625

Combine like terms: -0.0625 + 0.0625 = 0.0000
0.0000 + -2.0625j + j2 = 0 + 0.0625
-2.0625j + j2 = 0 + 0.0625

Combine like terms: 0 + 0.0625 = 0.0625
-2.0625j + j2 = 0.0625

The j term is -2.0625j.  Take half its coefficient (-1.03125).
Square it (1.063476563) and add it to both sides.

Add '1.063476563' to each side of the equation.
-2.0625j + 1.063476563 + j2 = 0.0625 + 1.063476563

Reorder the terms:
1.063476563 + -2.0625j + j2 = 0.0625 + 1.063476563

Combine like terms: 0.0625 + 1.063476563 = 1.125976563
1.063476563 + -2.0625j + j2 = 1.125976563

Factor a perfect square on the left side:
(j + -1.03125)(j + -1.03125) = 1.125976563

Calculate the square root of the right side: 1.061120428

Break this problem into two subproblems by setting 
(j + -1.03125) equal to 1.061120428 and -1.061120428.

Subproblem 1

j + -1.03125 = 1.061120428 Simplifying j + -1.03125 = 1.061120428 Reorder the terms: -1.03125 + j = 1.061120428 Solving -1.03125 + j = 1.061120428 Solving for variable 'j'. Move all terms containing j to the left, all other terms to the right. Add '1.03125' to each side of the equation. -1.03125 + 1.03125 + j = 1.061120428 + 1.03125 Combine like terms: -1.03125 + 1.03125 = 0.00000 0.00000 + j = 1.061120428 + 1.03125 j = 1.061120428 + 1.03125 Combine like terms: 1.061120428 + 1.03125 = 2.092370428 j = 2.092370428 Simplifying j = 2.092370428

Subproblem 2

j + -1.03125 = -1.061120428 Simplifying j + -1.03125 = -1.061120428 Reorder the terms: -1.03125 + j = -1.061120428 Solving -1.03125 + j = -1.061120428 Solving for variable 'j'. Move all terms containing j to the left, all other terms to the right. Add '1.03125' to each side of the equation. -1.03125 + 1.03125 + j = -1.061120428 + 1.03125 Combine like terms: -1.03125 + 1.03125 = 0.00000 0.00000 + j = -1.061120428 + 1.03125 j = -1.061120428 + 1.03125 Combine like terms: -1.061120428 + 1.03125 = -0.029870428 j = -0.029870428 Simplifying j = -0.029870428

Solution

The solution to the problem is based on the solutions from the subproblems. j = {2.092370428, -0.029870428}

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