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D( x )
x^2+9*x+14 = 0
x^2+2*x-35 = 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+2*x-35 = 0
x^2+2*x-35 = 0
x^2+2*x-35 = 0
DELTA = 2^2-(-35*1*4)
DELTA = 144
DELTA > 0
x = (144^(1/2)-2)/(1*2) or x = (-144^(1/2)-2)/(1*2)
x = 5 or x = -7
x in (-oo:-7) U (-7:-2) U (-2:5) U (5:+oo)
(((x^2-(3*x)-10)/(x^2+2*x-35))*(x^2+4*x-21))/(x^2+9*x+14) = 0
(((x^2-3*x-10)/(x^2+2*x-35))*(x^2+4*x-21))/(x^2+9*x+14) = 0
((x^2-3*x-10)*(x^2+4*x-21))/((x^2+2*x-35)*(x^2+9*x+14)) = 0
x^2-3*x-10 = 0
x^2-3*x-10 = 0
DELTA = (-3)^2-(-10*1*4)
DELTA = 49
DELTA > 0
x = (49^(1/2)+3)/(1*2) or x = (3-49^(1/2))/(1*2)
x = 5 or x = -2
(x+2)*(x-5) = 0
x^2+2*x-35 = 0
x^2+2*x-35 = 0
DELTA = 2^2-(-35*1*4)
DELTA = 144
DELTA > 0
x = (144^(1/2)-2)/(1*2) or x = (-144^(1/2)-2)/(1*2)
x = 5 or x = -7
(x+7)*(x-5) = 0
x^2+4*x-21 = 0
x^2+4*x-21 = 0
DELTA = 4^2-(-21*1*4)
DELTA = 100
DELTA > 0
x = (100^(1/2)-4)/(1*2) or x = (-100^(1/2)-4)/(1*2)
x = 3 or x = -7
(x+7)*(x-3) = 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)*(x-5)*(x+7)*(x-3))/((x+7)^2*(x-5)*(x+2)) = 0
( x+2 )
x+2 = 0 // - 2
x = -2
( x+7 )
x+7 = 0 // - 7
x = -7
( x-3 )
x-3 = 0 // + 3
x = 3
( x-5 )
x-5 = 0 // + 5
x = 5
x in { -2}
x in { -7}
x in { 5}
x = 3
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