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x in (-oo:+oo)
x^(8/5)*((7*(2*x-3))/25) = 0
(7*x^(8/5)*(2*x-3))/25 = 0
( 2*x-3 )
2*x-3 = 0 // + 3
2*x = 3 // : 2
x = 3/2
( 7 )
7 = 0
x belongs to the empty set
( x^(8/5) )
1*x^(8/5) = 0 // : 1
x^(8/5) = 0
x = 0
x in { 3/2, 0 }
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