21j^2-57jk-18k^2=

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Solution for 21j^2-57jk-18k^2= equation:


Simplifying
21j2 + -57jk + -18k2 = 0

Reorder the terms:
-57jk + 21j2 + -18k2 = 0

Solving
-57jk + 21j2 + -18k2 = 0

Solving for variable 'j'.

Factor out the Greatest Common Factor (GCF), '3'.
3(-19jk + 7j2 + -6k2) = 0

Factor a trinomial.
3((j + -3k)(7j + 2k)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(j + -3k)' equal to zero and attempt to solve: Simplifying j + -3k = 0 Solving j + -3k = 0 Move all terms containing j to the left, all other terms to the right. Add '3k' to each side of the equation. j + -3k + 3k = 0 + 3k Combine like terms: -3k + 3k = 0 j + 0 = 0 + 3k j = 0 + 3k Remove the zero: j = 3k Simplifying j = 3k

Subproblem 2

Set the factor '(7j + 2k)' equal to zero and attempt to solve: Simplifying 7j + 2k = 0 Solving 7j + 2k = 0 Move all terms containing j to the left, all other terms to the right. Add '-2k' to each side of the equation. 7j + 2k + -2k = 0 + -2k Combine like terms: 2k + -2k = 0 7j + 0 = 0 + -2k 7j = 0 + -2k Remove the zero: 7j = -2k Divide each side by '7'. j = -0.2857142857k Simplifying j = -0.2857142857k

Solution

j = {3k, -0.2857142857k}

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