1/(7X)-1(5X)=0

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Solution for 1/(7X)-1(5X)=0 equation: 


D( X )

7*X = 0

7*X = 0

7*X = 0

7*X = 0 // : 7

X = 0

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

1/(7*X)-(1*5*X) = 0

1/(7*X)-5*X = 0

1/7*X^-1-5*X^1 = 0

(1/7*X^0-5*X^2)/(X^1) = 0 // * X^2

X^1*(1/7*X^0-5*X^2) = 0

X^1

1/7-5*X^2 = 0

1/7-5*X^2 = 0

DELTA = 0^2-(-5*4*(1/7))

DELTA = 20/7

DELTA > 0

X = ((20/7)^(1/2)+0)/(-5*2) or X = (0-(20/7)^(1/2))/(-5*2)

X = ((20/7)^(1/2))/(-10) or X = ((20/7)^(1/2))/10

X in { ((20/7)^(1/2))/(-10), ((20/7)^(1/2))/10} 

X in { ((20/7)^(1/2))/(-10), ((20/7)^(1/2))/10 }

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