4x2-21/8

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Solution for 4x2-21/8 equation: 


x in (-oo:+oo)

4*x^2-(21/8) = 0

4*x^2-21/8 = 0

4*x^2 = 21/8 // : 4

x^2 = 21/32

x^2 = 21/32 // ^ 1/2

abs(x) = (21/32)^(1/2)

x = (21/32)^(1/2) or x = -(21/32)^(1/2)

x in { (21/32)^(1/2), -(21/32)^(1/2) }

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