Решите пж!!!
(1) 1-5x при x=-4
(2)
[tex] - 2o {b}^{3} \times 3 {a}^{2} \times {b}^{4} [/tex]
[tex]( -2 {a}^{5} {a}^{2} {)}^{3} [/tex]
[tex]2 \ \frac{2}{3} {x}^{2} {y}^{8} \times ( - 1 \ \frac{1}{2} x \: {y}^{3} {)}^{4} [/tex]
(3)
[tex] \frac{ {25}^{2} \times {5}^{5} }{ {5}^{7} } [/tex]