7/9-2/8x4/9

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Solution for 7/9-2/8x4/9 equation: 


x in (-oo:+oo)

7/9-(((2/8)*x^4)/9) = 0

(-1/36)*x^4+7/9 = 0

-1/36*x^4 = -7/9 // : -1/36

x^4 = 28

x^4 = 28 // ^ 1/4

abs(x) = 28^(1/4)

x = 28^(1/4) or x = -28^(1/4)

x in { 28^(1/4), -28^(1/4) }

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