-2/9x^2=3x+9

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Solution for -2/9x^2=3x+9 equation: 


x in (-oo:+oo)

(-2/9)*x^2 = 3*x+9 // - 3*x+9

(-2/9)*x^2-(3*x)-9 = 0

(-2/9)*x^2-3*x-9 = 0

-2/9*x^2-3*x-9 = 0

DELTA = (-3)^2-(-9*(-2/9)*4)

DELTA = 1

DELTA > 0

x = (1^(1/2)+3)/(-2/9*2) or x = (3-1^(1/2))/(-2/9*2)

x = -9 or x = -9/2

x in { -9, -9/2 }

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