Verified answer

Объяснение:

[tex]{(12 \times x) }^{4} [/tex]

[tex]x = \frac{1}{3} \\ {(12 \times \frac{1}{3}) }^{4} = {4}^{4} = 256[/tex]

[tex]x = - \frac{1}{4} \\ {(12 \times ( - \frac{1}{4})) }^{4} = - {3}^{4} = 81[/tex]

[tex] {m}^{3} - {n}^{3} \\ {( - 2)}^{3} - {( - 3)}^{3} = \\ - 8 - ( - 27) = \\ - 8 + 27 = 19[/tex]