(v+3)/(v^2-3v-40)

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Solution for (v+3)/(v^2-3v-40) equation: 


D( v )

v^2-(3*v)-40 = 0

v^2-(3*v)-40 = 0

v^2-(3*v)-40 = 0

v^2-3*v-40 = 0

v^2-3*v-40 = 0

DELTA = (-3)^2-(-40*1*4)

DELTA = 169

DELTA > 0

v = (169^(1/2)+3)/(1*2) or v = (3-169^(1/2))/(1*2)

v = 8 or v = -5

v in (-oo:-5) U (-5:8) U (8:+oo)

(v+3)/(v^2-(3*v)-40) = 0

(v+3)/(v^2-3*v-40) = 0

v^2-3*v-40 = 0

v^2-3*v-40 = 0

DELTA = (-3)^2-(-40*1*4)

DELTA = 169

DELTA > 0

v = (169^(1/2)+3)/(1*2) or v = (3-169^(1/2))/(1*2)

v = 8 or v = -5

(v+5)*(v-8) = 0

(v+3)/((v+5)*(v-8)) = 0

v+3 = 0 // - 3

v = -3

v = -3

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