a) $$(-10ab^{12})^2 = (-10)^2 \cdot a^2 \cdot (b^{12})^2 = 100a^2b^{24}$$ б) $$(-0,2x^4y)^4 = (-0,2)^4 \cdot (x^4)^4 \cdot y^4 = 0,0016x^{16}y^4$$ в) $$(-3xy^2a^3)^3 = (-3)^3 \cdot x^3 \cdot (y^2)^3 \cdot (a^3)^3 = -27x^3y^6a^9$$ г) $$(-0,5ab^2c^3)^4 = (-0,5)^4 \cdot a^4 \cdot (b^2)^4 \cdot (c^3)^4 = 0,0625a^4b^8c^{12}$$
Ответ: a) $$100a^2b^{24}$$, б) $$0,0016x^{16}y^4$$, в) $$-27x^3y^6a^9$$, г) $$0,0625a^4b^8c^{12}$$