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D( x )
x^2+9*x+14 = 0
x^2-(3*x)+2 = 0
x^2+9*x+14 = 0
x^2+9*x+14 = 0
x^2+9*x+14 = 0
DELTA = 9^2-(1*4*14)
DELTA = 25
DELTA > 0
x = (25^(1/2)-9)/(1*2) or x = (-25^(1/2)-9)/(1*2)
x = -2 or x = -7
x^2-(3*x)+2 = 0
x^2-(3*x)+2 = 0
x^2-3*x+2 = 0
x^2-3*x+2 = 0
DELTA = (-3)^2-(1*2*4)
DELTA = 1
DELTA > 0
x = (1^(1/2)+3)/(1*2) or x = (3-1^(1/2))/(1*2)
x = 2 or x = 1
x in (-oo:-7) U (-7:-2) U (-2:1) U (1:2) U (2:+oo)
(((x^2-4)/(x^2+9*x+14))*(x^2+3*x-4))/(x^2-(3*x)+2) = 0
(((x^2-4)/(x^2+9*x+14))*(x^2+3*x-4))/(x^2-3*x+2) = 0
((x^2-4)*(x^2+3*x-4))/((x^2+9*x+14)*(x^2-3*x+2)) = 0
x^2+9*x+14 = 0
x^2+9*x+14 = 0
DELTA = 9^2-(1*4*14)
DELTA = 25
DELTA > 0
x = (25^(1/2)-9)/(1*2) or x = (-25^(1/2)-9)/(1*2)
x = -2 or x = -7
(x+7)*(x+2) = 0
x^2+3*x-4 = 0
x^2+3*x-4 = 0
DELTA = 3^2-(-4*1*4)
DELTA = 25
DELTA > 0
x = (25^(1/2)-3)/(1*2) or x = (-25^(1/2)-3)/(1*2)
x = 1 or x = -4
(x+4)*(x-1) = 0
x^2-3*x+2 = 0
x^2-3*x+2 = 0
DELTA = (-3)^2-(1*2*4)
DELTA = 1
DELTA > 0
x = (1^(1/2)+3)/(1*2) or x = (3-1^(1/2))/(1*2)
x = 2 or x = 1
(x-1)*(x-2) = 0
((x^2-4)*(x+4)*(x-1))/((x+7)*(x+2)*(x-1)*(x-2)) = 0
( x+4 )
x+4 = 0 // - 4
x = -4
( x-1 )
x-1 = 0 // + 1
x = 1
( x^2-4 )
1*x^2 = 4 // : 1
x^2 = 4
x^2 = 4 // ^ 1/2
abs(x) = 2
x = 2 or x = -2
x in { 1}
x in { 2}
x in { -2}
x = -4
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