s^2-7s+12/3s^2-21s+36

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Solution for s^2-7s+12/3s^2-21s+36 equation: 


s in (-oo:+oo)

s^2+(12/3)*s^2-(7*s)-(21*s)+36 = 0

s^2+(12/3)*s^2-7*s-21*s+36 = 0

5*s^2-28*s+36 = 0

DELTA = (-28)^2-(4*5*36)

DELTA = 64

DELTA > 0

s = (64^(1/2)+28)/(2*5) or s = (28-64^(1/2))/(2*5)

s = 18/5 or s = 2

s in { 2, 18/5 }

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