7x^1/2=21x^2

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Solution for 7x^1/2=21x^2 equation: 


x in (-oo:+oo)

(7*x^1)/2 = 21*x^2 // - 21*x^2

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

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

7/2*x-21*x^2 = 0

DELTA = (7/2)^2-(-21*0*4)

DELTA = 49/4

DELTA > 0

x = ((49/4)^(1/2)-7/2)/(-21*2) or x = (-(49/4)^(1/2)-7/2)/(-21*2)

x = 0 or x = 1/6

x in { 0, 1/6 }

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