a) 2$$^3$$ $$\cdot$$ (-2)$$^4$$ = 8 $$\cdot$$ 16 = 128
б) $$\frac{(-0,5)^{10}}{(-0,5)^7}$$ = (-0,5)$$^{10-7}$$ = (-0,5)$$^3$$ = -0,125
в) (0,2 $$\cdot$$ 5 $$\cdot$$ 3)$$^5$$ = (1 $$\cdot$$ 3)$$^5$$ = 3$$^5$$ = 243
г) ((-$$\frac{2}{3}$$)$$^2$$)$$^2$$ = (-$$\frac{2}{3}$$)$$^{2\cdot2}$$ = (-$$\frac{2}{3}$$)$$^4$$ = $$\frac{16}{81}$$
Ответ: a) 128; б) -0,125; в) 243; г) $$\frac{16}{81}$$