2j^2+9j+7=0

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Solution for 2j^2+9j+7=0 equation:


Simplifying
2j2 + 9j + 7 = 0

Reorder the terms:
7 + 9j + 2j2 = 0

Solving
7 + 9j + 2j2 = 0

Solving for variable 'j'.

Factor a trinomial.
(7 + 2j)(1 + j) = 0

Subproblem 1

Set the factor '(7 + 2j)' equal to zero and attempt to solve: Simplifying 7 + 2j = 0 Solving 7 + 2j = 0 Move all terms containing j to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 2j = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 2j = 0 + -7 2j = 0 + -7 Combine like terms: 0 + -7 = -7 2j = -7 Divide each side by '2'. j = -3.5 Simplifying j = -3.5

Subproblem 2

Set the factor '(1 + j)' equal to zero and attempt to solve: Simplifying 1 + j = 0 Solving 1 + j = 0 Move all terms containing j to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + j = 0 + -1 Combine like terms: 1 + -1 = 0 0 + j = 0 + -1 j = 0 + -1 Combine like terms: 0 + -1 = -1 j = -1 Simplifying j = -1

Solution

j = {-3.5, -1}

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