1/3(9a^2-15a+7)

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Solution for 1/3(9a^2-15a+7) equation: 


a in (-oo:+oo)

(1/3)*(9*a^2-(15*a)+7) = 0

(1/3)*(9*a^2-15*a+7) = 0

1/3*(9*a^2-15*a+7) = 0

9*a^2-15*a+7 = 0

9*a^2-15*a+7 = 0

DELTA = (-15)^2-(4*7*9)

DELTA = -27

DELTA < 0

1 = 0

1/3 = 0

a belongs to the empty set

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