(d-4/4)^2=49

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Solution for (d-4/4)^2=49 equation: 


d in (-oo:+oo)

(d-(4/4))^2 = 49 // - 49

(d-(4/4))^2-49 = 0

(d-1)^2-49 = 0

(d-1)^2-49 = 0

d^2-2*d-48 = 0

d^2-2*d-48 = 0

d^2-2*d-48 = 0

DELTA = (-2)^2-(-48*1*4)

DELTA = 196

DELTA > 0

d = (196^(1/2)+2)/(1*2) or d = (2-196^(1/2))/(1*2)

d = 8 or d = -6

(d+6)*(d-8) = 0

(d+6)*(d-8) = 0

( d+6 )

d+6 = 0 // - 6

d = -6

( d-8 )

d-8 = 0 // + 8

d = 8

d in { -6, 8 }

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