1. -(2³) ²= 2.(-2 per 3)³ 3. -6(2a+4b) =

[tex]1. \: - ( { {2}^{3} )}^{2} = - {2}^{6} \\ 2. \: ( { \frac{ - 2}{3}) }^{3} = \frac{ - 8}{27} \\ 3. \: - 6(2a + 4b) = - 12a - 24b[/tex]
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