1-(16x^4)/81

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Solution for 1-(16x^4)/81 equation: 


x in (-oo:+oo)

1-((16*x^4)/81) = 0

(-16/81)*x^4+1 = 0

-16/81*x^4 = -1 // : -16/81

x^4 = 81/16

x^4 = 81/16 // ^ 1/4

abs(x) = 3/2

x = 3/2 or x = -3/2

x in { 3/2, -3/2 }

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