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D( q )
q = 0
q = 0
q = 0
q in (-oo:0) U (0:+oo)
32/q+8 = 2*q // - 2*q
32/q-(2*q)+8 = 0
32/q-2*q+8 = 0
32*q^-1-2*q^1+8*q^0 = 0
(8*q^1-2*q^2+32*q^0)/(q^1) = 0 // * q^2
q^1*(8*q^1-2*q^2+32*q^0) = 0
q^1
8*q-2*q^2+32 = 0
8*q-2*q^2+32 = 0
DELTA = 8^2-(-2*4*32)
DELTA = 320
DELTA > 0
q = (320^(1/2)-8)/(-2*2) or q = (-320^(1/2)-8)/(-2*2)
q = (8*5^(1/2)-8)/(-4) or q = (-8*5^(1/2)-8)/(-4)
q in { (8*5^(1/2)-8)/(-4), (-8*5^(1/2)-8)/(-4)}
q in { (8*5^(1/2)-8)/(-4), (-8*5^(1/2)-8)/(-4) }
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