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D( x )
2*x+3 = 0
2*x+3 = 0
2*x+3 = 0
2*x+3 = 0 // - 3
2*x = -3 // : 2
x = -3/2
x in (-oo:-3/2) U (-3/2:+oo)
(4*x^2+x-11)/(2*x+3) = 0
4*x^2+x-11 = 0
4*x^2+x-11 = 0
DELTA = 1^2-(-11*4*4)
DELTA = 177
DELTA > 0
x = (177^(1/2)-1)/(2*4) or x = (-177^(1/2)-1)/(2*4)
x = (177^(1/2)-1)/8 or x = (-(177^(1/2)+1))/8
(x+(177^(1/2)+1)/8)*(x-((177^(1/2)-1)/8)) = 0
((x+(177^(1/2)+1)/8)*(x-((177^(1/2)-1)/8)))/(2*x+3) = 0
( x+(177^(1/2)+1)/8 )
x+(177^(1/2)+1)/8 = 0 // - (177^(1/2)+1)/8
x = -((177^(1/2)+1)/8)
( x-((177^(1/2)-1)/8) )
x-((177^(1/2)-1)/8) = 0 // + (177^(1/2)-1)/8
x = (177^(1/2)-1)/8
x in { -((177^(1/2)+1)/8), (177^(1/2)-1)/8 }
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