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Simplifying
-2k2 = -162
Solving
-2k2 = -162
Solving for variable 'k'.
Move all terms containing k to the left, all other terms to the right.
Divide each side by '-2'.
k2 = 81
Simplifying
k2 = 81
Take the square root of each side:
k = {-9, 9}
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