-1/4x^2+7

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Solution for -1/4x^2+7 equation: 


x in (-oo:+oo)

(-1/4)*x^2+7 = 0

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

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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