1-r/4r/1+r/8r

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Solution for 1-r/4r/1+r/8r equation: 


r in (-oo:+oo)

(r/8)*r-(((r/4)*r)/1)+1 = 0

(-1/4)*r^2+(r/8)*r+1 = 0

-1/8*r^2 = -1 // : -1/8

r^2 = 8

r^2 = 8 // ^ 1/2

abs(r) = 2*2^(1/2)

r = 2*2^(1/2) or r = -(2*2^(1/2))

r in { 2*2^(1/2), -(2*2^(1/2)) }

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