Ответ:

Используем правила: \((a^m)^n=a^{mn}\), \(a^m\cdot a^n=a^{m+n}\), \(a^m:a^n=a^{m-n}\).

  1. \((b^5)^2\cdot b^3=b^{10+3}=b^{13}\).
  2. \(b\cdot(b^3)^4=b^{1+12}=b^{13}\).
  3. \((b^4)^3=b^{12}\).
  4. \(b^6\cdot(b^4)^8=b^{6+32}=b^{38}\).
  5. \((b^7)^5\cdot b=b^{35+1}=b^{36}\).
  6. \((b^{11})^4\cdot b^{10}=b^{44+10}=b^{54}\).
  7. \((b^5)^{10}:b^{31}=b^{50-31}=b^{19}\).
  8. \(b^{43}:(b^9)^4=b^{43-36}=b^7\).
  9. \((b^6)^{12}\cdot b^{59}=b^{72+59}=b^{131}\).
  10. \(b^{100}:(b^5)^4=b^{100-20}=b^{80}\).
  11. \((b^{17})^5:b^{81}=b^{85-81}=b^4\).
  12. \(b^{79}:(b^{13})^6=b^{79-78}=b\).

Ответ: 1) \(b^{13}\); 2) \(b^{13}\); 3) \(b^{12}\); 4) \(b^{38}\); 5) \(b^{36}\); 6) \(b^{54}\); 7) \(b^{19}\); 8) \(b^7\); 9) \(b^{131}\); 10) \(b^{80}\); 11) \(b^4\); 12) \(b\).