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16*x^2+(9/16)*x^2+24*x-9 = 0
265/16*x^2+24*x-9 = 0
DELTA = 24^2-(-9*4*265/16)
DELTA = 4689/4
DELTA > 0
x = ((4689/4)^(1/2)-24)/(2*265/16) or x = (-(4689/4)^(1/2)-24)/(2*265/16)
x = 8/265*((4689/4)^(1/2)-24) or x = -8/265*((4689/4)^(1/2)+24)
x in { -8/265*((4689/4)^(1/2)+24), 8/265*((4689/4)^(1/2)-24) }
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