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D( y )
3*y^2+8*y-3 = 0
3*y^2+8*y-3 = 0
3*y^2+8*y-3 = 0
3*y^2+8*y-3 = 0
DELTA = 8^2-(-3*3*4)
DELTA = 100
DELTA > 0
y = (100^(1/2)-8)/(2*3) or y = (-100^(1/2)-8)/(2*3)
y = 1/3 or y = -3
y in (-oo:-3) U (-3:1/3) U (1/3:+oo)
(2*y^2+5*y-3)/(3*y^2+8*y-3) = 0
2*y^2+5*y-3 = 0
2*y^2+5*y-3 = 0
DELTA = 5^2-(-3*2*4)
DELTA = 49
DELTA > 0
y = (49^(1/2)-5)/(2*2) or y = (-49^(1/2)-5)/(2*2)
y = 1/2 or y = -3
(y+3)*(y-1/2) = 0
3*y^2+8*y-3 = 0
3*y^2+8*y-3 = 0
DELTA = 8^2-(-3*3*4)
DELTA = 100
DELTA > 0
y = (100^(1/2)-8)/(2*3) or y = (-100^(1/2)-8)/(2*3)
y = 1/3 or y = -3
(y+3)*(y-1/3) = 0
((y+3)*(y-1/2))/((y+3)*(y-1/3)) = 0
( y+3 )
y+3 = 0 // - 3
y = -3
( y-1/2 )
y-1/2 = 0 // + 1/2
y = 1/2
y in { -3}
y = 1/2
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