53.3=4x^2/(0.4-x)(0.4-x)

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Solution for 53.3=4x^2/(0.4-x)(0.4-x) equation: 


D( x )

0.4-x = 0

0.4-x = 0

0.4-x = 0

0.4-x = 0 // - 0.4

-x = -0.4 // * -1

x = 0.4

x in (-oo:0.4) U (0.4:+oo)

53.3 = ((4*x^2)/(0.4-x))*(0.4-x) // - ((4*x^2)/(0.4-x))*(0.4-x)

53.3-(((4*x^2)/(0.4-x))*(0.4-x)) = 0

53.3-4*x^2 = 0

-4*x^2 = -53.3 // : -4

x^2 = 13.325

x^2 = 13.325 // ^ 1/2

abs(x) = 13.325^(1/2)

x = 13.325^(1/2) or x = -13.325^(1/2)

x in { 13.325^(1/2), -13.325^(1/2) }

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