b) ∛-3 + 2∛9 - 4∛3 - 5∛9=
= -∛3 - 4∛3 +2∛9 -5∛9 =
= -5∛3 - 3∛9 =
= -5∛3 -3∛3*∛3 =
= ∛3( -5 - 3∛3)
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b) ∛-3 + 2∛9 - 4∛3 - 5∛9=
= -∛3 - 4∛3 +2∛9 -5∛9 =
= -5∛3 - 3∛9 =
= -5∛3 -3∛3*∛3 =
= ∛3( -5 - 3∛3)