4x^2-25/6x^2-15x

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Solution for 4x^2-25/6x^2-15x equation: 


x in (-oo:+oo)

4*x^2-((25/6)*x^2)-(15*x) = 0

4*x^2+(-25/6)*x^2-15*x = 0

-1/6*x^2-15*x = 0

DELTA = (-15)^2-(-1/6*0*4)

DELTA = 225

DELTA > 0

x = (225^(1/2)+15)/(-1/6*2) or x = (15-225^(1/2))/(-1/6*2)

x = -90 or x = 0

x in { -90, 0 }

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