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a) ∛16 × ∛12 = (∛192) = ∛64 × ∛3 = 4∛3
b) √18 × 10 = √9 × √2 × 10 = 3√2 × 10 = 30√2
c) ∛6 × ∛9 = ∛56 = ∛8 × ∛7 = 2∛7
d) w załączniku
e) w załączniku