(y^2+2y-35)/(y+7)

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Solution for (y^2+2y-35)/(y+7) equation: 


D( y )

y+7 = 0

y+7 = 0

y+7 = 0

y+7 = 0 // - 7

y = -7

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

(y^2+2*y-35)/(y+7) = 0

y^2+2*y-35 = 0

y^2+2*y-35 = 0

DELTA = 2^2-(-35*1*4)

DELTA = 144

DELTA > 0

y = (144^(1/2)-2)/(1*2) or y = (-144^(1/2)-2)/(1*2)

y = 5 or y = -7

(y+7)*(y-5) = 0

y-5 = 0

y-5 = 0 // + 5

y = 5

y = 5

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