(7w^2+3w-4)/(w+1)

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Solution for (7w^2+3w-4)/(w+1) equation: 


D( w )

w+1 = 0

w+1 = 0

w+1 = 0

w+1 = 0 // - 1

w = -1

w in (-oo:-1) U (-1:+oo)

(7*w^2+3*w-4)/(w+1) = 0

7*w^2+3*w-4 = 0

7*w^2+3*w-4 = 0

DELTA = 3^2-(-4*4*7)

DELTA = 121

DELTA > 0

w = (121^(1/2)-3)/(2*7) or w = (-121^(1/2)-3)/(2*7)

w = 4/7 or w = -1

(w+1)*(w-4/7) = 0

w-4/7 = 0

w-4/7 = 0 // + 4/7

w = 4/7

w = 4/7

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