400+k^2/6=625

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Solution for 400+k^2/6=625 equation: 


k in (-oo:+oo)

(k^2)/6+400 = 625 // - 625

(k^2)/6-625+400 = 0

1/6*k^2 = 225 // : 1/6

k^2 = 1350

k^2 = 1350 // ^ 1/2

abs(k) = 15*6^(1/2)

k = 15*6^(1/2) or k = -(15*6^(1/2))

k in { 15*6^(1/2), -(15*6^(1/2)) }

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