-21/(x-7)^2

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Solution for -21/(x-7)^2 equation: 


D( x )

(x-7)^2 = 0

(x-7)^2 = 0

(x-7)^2 = 0

x-7 = 0 // + 7

x = 7

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

-21/((x-7)^2) = 0

-21 = 0

x belongs to the empty set

x belongs to the empty set

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