$B=\frac{8^{5}+(-2)^{12}}{2^{15}+64^{3}}=\frac{(2^{3})^{5}+2^{12}}{2^{15}+(2^{6})^{3}}=\frac{2^{15}+2^{12}}{2^{15}+2^{18}}=\frac{2^{12}\times (2^{3}+1)}{2^{15}\times (1+2^{3})}=\frac{1}{2^{3}}=\frac{1}{8}$
Bài 2. Tính giá trị biểu thức sau:
$B=\frac{8^{5}+(-2)^{12}}{2^{15}+64^{3}}$
$B=\frac{8^{5}+(-2)^{12}}{2^{15}+64^{3}}=\frac{(2^{3})^{5}+2^{12}}{2^{15}+(2^{6})^{3}}=\frac{2^{15}+2^{12}}{2^{15}+2^{18}}=\frac{2^{12}\times (2^{3}+1)}{2^{15}\times (1+2^{3})}=\frac{1}{2^{3}}=\frac{1}{8}$