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x in (-oo:+oo)
Y = x*((3-(4*x))/8)-1 // - x*((3-(4*x))/8)-1
Y-(x*((3-(4*x))/8))+1 = 0
Y-(x*((3-4*x)/8))+1 = 0
(-1*x*(3-4*x))/8+Y+1 = 0
(-1*x*(3-4*x))/8+(8*Y)/8+(1*8)/8 = 0
8*Y-1*x*(3-4*x)+1*8 = 0
8*Y+4*x^2-3*x+8 = 0
(8*Y+4*x^2-3*x+8)/8 = 0
(8*Y+4*x^2-3*x+8)/8 = 0 // * 8
8*Y+4*x^2-3*x+8 = 0
8*Y+4*x^2-3*x+8 = 0
DELTA = (-3)^2-(4*4*(8*Y+8))
DELTA = 9-16*(8*Y+8)
9-16*(8*Y+8) = 0
9-16*(8*Y+8) = 0
-128*Y-119 = 0
-128*Y-119 = 0
-128*Y-119 = 0 // + 119
-128*Y = 119 // : -128
Y = 119/(-128)
Y = -119/128
DELTA = 0 <=> t_3 = -119/128
x = 3/(2*4) i Y = -119/128
x = 3/8 i Y = -119/128
( x = ((9-16*(8*Y+8))^(1/2)+3)/(2*4) or x = (3-(9-16*(8*Y+8))^(1/2))/(2*4) ) i Y > -119/128
( x = ((9-16*(8*Y+8))^(1/2)+3)/8 or x = (3-(9-16*(8*Y+8))^(1/2))/8 ) i Y > -119/128
Y+119/128 > 0
Y+119/128 > 0 // - 119/128
Y > -119/128
x in { 3/8, ((9-16*(8*Y+8))^(1/2)+3)/8, (3-(9-16*(8*Y+8))^(1/2))/8 }
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