\(\frac{2.4+2.4.8+4.8.16+8.16.32}{3.4+2.6.8+4.12.16+8.24.32}\)
=\(\frac{4.2+2.8.2.2+4.16.4.2+8.32.8.2}{4.3+2.8.2.3+4.16.4.3+8.32.8.3}\)
=\(\frac{2.\left(4+2.8.2+4.16.4+8.32.8\right)}{3.\left(4+2.8.2+4.16.4+8.32.8\right)}\)
=\(\frac{2}{3}\)
Ủng hộ mik nhé !!!
Đặt biểu thức trên là A. Ta có:
A=\(\frac{2^3+2^6+2^9+2^{12}}{2^2.3+2^5.3+2^8.3+2^{11}.3}\)
=\(\frac{2^3.\left(1+2^3+2^6+2^9\right)}{2^2.3.\left(1+2^3+2^6+2^9\right)}\)
= \(\frac{2^3}{2^2.3}\)
=\(\frac{2}{3}\)
\(\frac{2.4+2.4.8+4.8.16+8.16.32}{3.4+2.6.8+4.12.16+8.24.32}\)
\(=\frac{8+8.8+8.64+8.512}{12+12.8+12.64+8.\left(12.2\right).32}\)
\(=\frac{=8.\left(1+8+64+512\right)}{12.\left(1+8+64+12.16.32\right)}\)
\(=\frac{8.\left(1+8+64+512\right)}{12.\left(1+8+64\right)+12.512}\)
\(=\frac{8.\left(1+8+64+512\right)}{12.\left(1+8+64+512\right)}\)
\(=\frac{8}{12}\)
\(=\frac{2}{3}\)
các bạn vẫn có thể trả lời câu hỏi của mk ở cái bài so sánh ý!!!!!
bài đó ai nhanh mk tk luôn~
