7/x-7-14/x^2=0

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Solution for 7/x-7-14/x^2=0 equation: 


D( x )

x = 0

x^2 = 0

x = 0

x = 0

x^2 = 0

x^2 = 0

1*x^2 = 0 // : 1

x^2 = 0

x = 0

x in (-oo:0) U (0:+oo)

7/x-(14/(x^2))-7 = 0

7/x-14*x^-2-7 = 0

7*x^-1-14*x^-2-7 = 0

t_1 = x^-1

7*t_1^1-14*t_1^2-7 = 0

7*t_1-14*t_1^2-7 = 0

DELTA = 7^2-(-14*(-7)*4)

DELTA = -343

DELTA < 0

x belongs to the empty set

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