Question

СРОЧНОО РЕШИТЕ ТОЛЬКО 7.8.9.10.11.12

Answer 1

7) $(b^{5})^{10}:b^{31}=b^{5*10}:b^{31}=b^{50}:b^{31}=b^{50-31}=b^{19}$

8) $b^{43}:(b^{9})^{4}=b^{43}:b^{9*4}=b^{43}:b^{36}=b^{43-36}=b^{7}$

9) $(b^{6})^{12}*b^{59}=b^{6*12}*b^{59}=b^{72}*b^{59}=b^{72+59}=b^{131}$

10) $b^{100}:(b^{5})^{4}=b^{100}:b^{5*4}=b^{100}:b^{20}=b^{100-20}=b^{80}$

11) $(b^{17})^{5}:b^{81}=b^{17*5}:b^{81}=b^{85}:b^{81}=b^{85-81}=b^{4}$

12) $b^{79}:(b^{13})^{6}=b^{79}:b^{13*6}=b^{79}:b^{78}=b^{79-78}=b$