(d-4/4)^2=100

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Solution for (d-4/4)^2=100 equation: 


d in (-oo:+oo)

(d-(4/4))^2 = 100 // - 100

(d-(4/4))^2-100 = 0

(d-1)^2-100 = 0

(d-1)^2-100 = 0

d^2-2*d-99 = 0

d^2-2*d-99 = 0

d^2-2*d-99 = 0

DELTA = (-2)^2-(-99*1*4)

DELTA = 400

DELTA > 0

d = (400^(1/2)+2)/(1*2) or d = (2-400^(1/2))/(1*2)

d = 11 or d = -9

(d+9)*(d-11) = 0

(d+9)*(d-11) = 0

( d+9 )

d+9 = 0 // - 9

d = -9

( d-11 )

d-11 = 0 // + 11

d = 11

d in { -9, 11 }

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