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D( x )
4*x+3 = 0
4*x+3 = 0
4*x+3 = 0
4*x+3 = 0 // - 3
4*x = -3 // : 4
x = -3/4
x in (-oo:-3/4) U (-3/4:+oo)
1/(4*x+3)+1*(2*x-5) = 2 // - 2
1/(4*x+3)+1*(2*x-5)-2 = 0
1/(4*x+3)+2*x-5-2 = 0
1/(4*x+3)+(2*x*(4*x+3))/(4*x+3)+(-5*(4*x+3))/(4*x+3)+(-2*(4*x+3))/(4*x+3) = 0
2*x*(4*x+3)-5*(4*x+3)-2*(4*x+3)+1 = 0
8*x^2+6*x-20*x-8*x-15-6+1 = 0
8*x^2-14*x-8*x-14-6 = 0
8*x^2-22*x-20 = 0
8*x^2-22*x-20 = 0
2*(4*x^2-11*x-10) = 0
4*x^2-11*x-10 = 0
DELTA = (-11)^2-(-10*4*4)
DELTA = 281
DELTA > 0
x = (281^(1/2)+11)/(2*4) or x = (11-281^(1/2))/(2*4)
x = (281^(1/2)+11)/8 or x = (11-281^(1/2))/8
2*(x-((11-281^(1/2))/8))*(x-((281^(1/2)+11)/8)) = 0
(2*(x-((11-281^(1/2))/8))*(x-((281^(1/2)+11)/8)))/(4*x+3) = 0
(2*(x-((11-281^(1/2))/8))*(x-((281^(1/2)+11)/8)))/(4*x+3) = 0 // * 4*x+3
2*(x-((11-281^(1/2))/8))*(x-((281^(1/2)+11)/8)) = 0
( x-((11-281^(1/2))/8) )
x-((11-281^(1/2))/8) = 0 // + (11-281^(1/2))/8
x = (11-281^(1/2))/8
( x-((281^(1/2)+11)/8) )
x-((281^(1/2)+11)/8) = 0 // + (281^(1/2)+11)/8
x = (281^(1/2)+11)/8
x in { (11-281^(1/2))/8, (281^(1/2)+11)/8 }
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