(-5)2+2(-5)-k=0

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Solution for (-5)2+2(-5)-k=0 equation: 



(-5)2+2(-5)-k=0

We add all the numbers together, and all the variables

-1k-20=0

We move all terms containing k to the left, all other terms to the right

-k=20

k=20/-1

k=-20

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