Ответ:

  1. 4d¹⁰ = (2d⁵)².

  2. 36a⁸b² = (6a⁴b)².

  3. 0,16a¹⁴b¹⁶ = (0,4a⁷b⁸)².

  4. 289a²⁰b³⁰c⁴⁰ = (17a¹⁰b¹⁵c²⁰)².