Răspuns:
Explicație pas cu pas:
10^(50-38-20)= 10^(-8)= 1/10^8
2^30 :2^20= 2^10
[tex] {10}^{51} \div {10}^{38} \div {10}^{20} = {10}^{7} \\ ( { {2}^{10} )}^{3} \div ({ {2}^{2}) }^{10} = {2}^{30} \div {2}^{20} = {2}^{10} [/tex]
