(y+2)/(y-3)+(y-1)/(y+7)

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Solution for (y+2)/(y-3)+(y-1)/(y+7) equation: 


D( y )

y+7 = 0

y-3 = 0

y+7 = 0

y+7 = 0

y+7 = 0 // - 7

y = -7

y-3 = 0

y-3 = 0

y-3 = 0 // + 3

y = 3

y in (-oo:-7) U (-7:3) U (3:+oo)

(y+2)/(y-3)+(y-1)/(y+7) = 0

((y+2)*(y+7))/((y-3)*(y+7))+((y-1)*(y-3))/((y-3)*(y+7)) = 0

(y+2)*(y+7)+(y-1)*(y-3) = 0

2*y^2+5*y+17 = 0

2*y^2+5*y+17 = 0

2*y^2+5*y+17 = 0

DELTA = 5^2-(2*4*17)

DELTA = -111

DELTA < 0

1 = 0

1/((y-3)*(y+7)) = 0

1/((y-3)*(y+7)) = 0 // * (y-3)*(y+7)

1 = 0

y belongs to the empty set

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