56x^7-42x^5-35x^3/7x^3

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Solution for 56x^7-42x^5-35x^3/7x^3 equation: 


x in (-oo:+oo)

56*x^7-(((35*x^3)/7)*x^3)-(42*x^5) = 0

56*x^7-5*x^6-42*x^5 = 0

56*x^7-5*x^6-42*x^5 = 0

x^5*(56*x^2-5*x-42) = 0

56*x^2-5*x-42 = 0

DELTA = (-5)^2-(-42*4*56)

DELTA = 9433

DELTA > 0

x = (9433^(1/2)+5)/(2*56) or x = (5-9433^(1/2))/(2*56)

x = (9433^(1/2)+5)/112 or x = (5-9433^(1/2))/112

x^5 = 0

1*x^5 = 0 // : 1

x^5 = 0

x = 0

x in { (5-9433^(1/2))/112, (9433^(1/2)+5)/112, 0 }

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