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(7*x^(4^2)-(7*x^(3^2)))/(3+4) = 0
(7*x^(4^2)-7*x^(3^2))/(3+4) = 0
(7*x^16-7*x^9)/7 = 0
7*x^16-7*x^9 = 0
7*x^9*(x^7-1) = 0
1*x^7 = 1 // : 1
x^7 = 1
x^7 = 1 // ^ 1/7
x = 1
7*x^9*(x-1) = 0
(7*x^9*(x-1))/7 = 0
( 7*x^9 )
7*x^9 = 0 // : 7
x^9 = 0
x = 0
( x-1 )
x-1 = 0 // + 1
x = 1
x in { 0, 1 }
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