a) $$2a^5b^2 \cdot ba^3 = 2a^5a^3b^2b = 2a^{5+3}b^{2+1} = 2a^8b^3$$
б) $$(-0,1x^3)^4 \cdot 10x = (-0,1)^4 \cdot (x^3)^4 \cdot 10x = 0,0001x^{3 \cdot 4} \cdot 10x = 0,0001x^{12} \cdot 10x = 0,001x^{12+1} = 0,001x^{13}$$
в) $$\left(\frac{2}{3}ab^2\right)^3 \cdot \frac{3}{2}a^3b^2 = \left(\frac{2}{3}\right)^3 \cdot a^3 \cdot (b^2)^3 \cdot \frac{3}{2}a^3b^2 = \frac{8}{27}a^3b^{2 \cdot 3} \cdot \frac{3}{2}a^3b^2 = \frac{8}{27}a^3b^6 \cdot \frac{3}{2}a^3b^2 = \frac{8 \cdot 3}{27 \cdot 2}a^{3+3}b^{6+2} = \frac{24}{54}a^6b^8 = \frac{4}{9}a^6b^8$$
Ответ: a) $$2a^8b^3$$, б) $$0,001x^{13}$$, в) $$\frac{4}{9}a^6b^8$$