x-4x^1/2-21=0

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Solution for x-4x^1/2-21=0 equation: 


x in (-oo:+oo)

x-((4*x^1)/2)-21 = 0

x-2*x-21 = 0

-x-21 = 0 // + 21

-x = 21 // * -1

x = -21

x = -21

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