x^2/7=4

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Solution for x^2/7=4 equation: 


x in (-oo:+oo)

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

(x^2)/7-4 = 0

1/7*x^2 = 4 // : 1/7

x^2 = 28

x^2 = 28 // ^ 1/2

abs(x) = 2*7^(1/2)

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

x in { 2*7^(1/2), -(2*7^(1/2)) }

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