7=r^1/2

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Solution for 7=r^1/2 equation: 


r in (-oo:+oo)

7 = (r^1)/2 // - (r^1)/2

7-((r^1)/2) = 0

7-(r/2) = 0

7-1/2*r = 0 // - 7

-1/2*r = -7 // : -1/2

r = -7/(-1/2)

r = 14

r = 14

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