-4j^2-80j=-116

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Solution for -4j^2-80j=-116 equation:


Simplifying
-4j2 + -80j = -116

Reorder the terms:
-80j + -4j2 = -116

Solving
-80j + -4j2 = -116

Solving for variable 'j'.

Reorder the terms:
116 + -80j + -4j2 = -116 + 116

Combine like terms: -116 + 116 = 0
116 + -80j + -4j2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(29 + -20j + -1j2) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(29 + -20j + -1j2)' equal to zero and attempt to solve: Simplifying 29 + -20j + -1j2 = 0 Solving 29 + -20j + -1j2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -29 + 20j + j2 = 0 Move the constant term to the right: Add '29' to each side of the equation. -29 + 20j + 29 + j2 = 0 + 29 Reorder the terms: -29 + 29 + 20j + j2 = 0 + 29 Combine like terms: -29 + 29 = 0 0 + 20j + j2 = 0 + 29 20j + j2 = 0 + 29 Combine like terms: 0 + 29 = 29 20j + j2 = 29 The j term is 20j. Take half its coefficient (10). Square it (100) and add it to both sides. Add '100' to each side of the equation. 20j + 100 + j2 = 29 + 100 Reorder the terms: 100 + 20j + j2 = 29 + 100 Combine like terms: 29 + 100 = 129 100 + 20j + j2 = 129 Factor a perfect square on the left side: (j + 10)(j + 10) = 129 Calculate the square root of the right side: 11.357816692 Break this problem into two subproblems by setting (j + 10) equal to 11.357816692 and -11.357816692.

Subproblem 1

j + 10 = 11.357816692 Simplifying j + 10 = 11.357816692 Reorder the terms: 10 + j = 11.357816692 Solving 10 + j = 11.357816692 Solving for variable 'j'. Move all terms containing j to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + j = 11.357816692 + -10 Combine like terms: 10 + -10 = 0 0 + j = 11.357816692 + -10 j = 11.357816692 + -10 Combine like terms: 11.357816692 + -10 = 1.357816692 j = 1.357816692 Simplifying j = 1.357816692

Subproblem 2

j + 10 = -11.357816692 Simplifying j + 10 = -11.357816692 Reorder the terms: 10 + j = -11.357816692 Solving 10 + j = -11.357816692 Solving for variable 'j'. Move all terms containing j to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + j = -11.357816692 + -10 Combine like terms: 10 + -10 = 0 0 + j = -11.357816692 + -10 j = -11.357816692 + -10 Combine like terms: -11.357816692 + -10 = -21.357816692 j = -21.357816692 Simplifying j = -21.357816692

Solution

The solution to the problem is based on the solutions from the subproblems. j = {1.357816692, -21.357816692}

Solution

j = {1.357816692, -21.357816692}

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