2(1.25^2)+k(1.25)+4=0

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Solution for 2(1.25^2)+k(1.25)+4=0 equation: 



2(1.25^2)+k(1.25)+4=0

We add all the numbers together, and all the variables

k(1.25)+7.125=0

We multiply parentheses

1.25k+7.125=0

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

1.25k=-7.125

k=-7.125/1.25

k=-5+0.875/1.25

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