3 (-2x5)2. (2x3)3 (0,1mm²)² (10m²n)²

3) A: $$(-2x^5)^2 \cdot (2x^3)^3 = 4x^{10} \cdot 8x^9 = 32x^{10+9} = 32x^{19}$$

B: $$(0.1mn^2)^2 \cdot (10m^2n)^2 = 0.01m^2n^4 \cdot 100m^4n^2 = m^{2+4}n^{4+2} = m^6n^6$$

Ответ: A: $$32x^{19}$$, B: $$m^6n^6$$