Răspuns:
b)
[tex]3^{42} :(3^{35} *3^{4}) * (3^{3} + 3 * 11):15=\\\\3^{42} :3^{35+4} * (27+3* 11):15=\\\\3^{42} :3^{39} * (27+33):15=\\\\3^{42-39} * 60:15=\\\\3^{3} *4=\\\\27*4=\boxed{108}[/tex]
c)
[tex]12^{2}+[(2^{4^{3}}) : (2^{9}) ^{7} +5^{60}:(5*5^{3})^{15}]=\\\\144+[2^{64} : 2^{63} +5^{60}:(5^{3+1})^{15}]=\\\\144+(2^{64-63} +5^{60}:5^{4*15})=\\\\144+(2^{1} +5^{60}:5^{60})=\\\\144+(2+1)=\\\\144+3 = \boxed{147}[/tex]
d)
[tex][(2*3*5)^{2} -7^{5}:7^{3}]:8^{0} -2^{4} *5^{2} =\\\\((30)^{2} -7^{5-3}):1 -16*25=\\\\(900 - 49) - 400 = \boxed{451}[/tex]
