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(-4-k)^3-6(-4-k)^2+9(-4-k)=0
We add all the numbers together, and all the variables
(-1k-4)^3-6(-1k-4)^2+9(-1k-4)=0
We multiply parentheses
(-1k-4)^3-6(-1k-4)^2-9k-36=0
We add all the numbers together, and all the variables
-9k+(-1k-4)^3-6(-1k-4)^2-36=0
We move all terms containing k to the left, all other terms to the right
-9k+(-1k-4)^3-6(-1k-4)^2=36
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