21x^3/5y^2

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Solution for 21x^3/5y^2 equation: 


x in (-oo:+oo)

((21*x^3)/5)*y^2 = 0

21/5*x^3*y^2 = 0 // : 21/5*y^2

x^3 = 0

x = 0

x = 0

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