((7-x)/4x)/((49-x^2)/7)

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Solution for ((7-x)/4x)/((49-x^2)/7) equation: 


D( x )

(49-x^2)/7 = 0

(49-x^2)/7 = 0

(49-x^2)/7 = 0

-1*x^2 = -49 // : -1

x^2 = 49

x^2 = 49 // ^ 1/2

abs(x) = 7

x = 7 or x = -7

x in (-oo:-7) U (-7:7) U (7:+oo)

(x*((7-x)/4))/((49-x^2)/7) = 0

(7*x*(7-x))/(4*(49-x^2)) = 0

( 7-x )

7-x = 0 // - 7

-x = -7 // * -1

x = 7

( x )

x = 0

x in { 7} 

x = 0

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