1) 3a²-2a-4b²-4b+4ab ifadesinin çarpanlarından biri hangisidir?(3a-2b-2)

2)(x²-1)(x²+x+1)(x²-x+1)=120 ise x kaçtır? ( ∛11)

3) x-1/x=3 ise

x⁴+x²+1/x²+1/x⁴= ?(130)

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