9x^2-21x/3x^2-15x

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Solution for 9x^2-21x/3x^2-15x equation: 


x in (-oo:+oo)

9*x^2-(((21*x)/3)*x^2)-(15*x) = 0

9*x^2-7*x^3-15*x = 0

9*x^2-7*x^3-15*x = 0

x*(9*x-7*x^2-15) = 0

9*x-7*x^2-15 = 0

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

DELTA = -339

DELTA < 0

x = 0

x = 0

x = 0

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