\(A=\frac{2^{13}.9-2^{12}.5}{2^{12}.6+2^{12}.7}\)
\(=\frac{2^{12}.\left(2.9-5\right)}{2^{12}.\left(6+7\right)}\)
\(=\frac{2^{12}.\left(18-5\right)}{2^{12}.13}\)
\(=\frac{2^{12}.13}{2^{12}.13}=1\)
\(A=\frac{2^{13}.9-2^{12}.5}{2^{12}.6+2^{12}.7}\)
\(=\frac{2^{12}.\left(2.9-5\right)}{2^{12}.\left(6+7\right)}\)
\(=\frac{2^{12}.\left(18-5\right)}{2^{12}.13}\)
\(=\frac{2^{12}.13}{2^{12}.13}=1\)
Rút gọn phân số:\(\frac{7.4^5.3^{11}+2^{13}.9^5}{6^{10}+2^{12}.3^{10}}\)
Rút gọn phân số:\(\frac{7.4^5.3^{11}+2^{13}.9^5}{6^{10}+2^{12}.3^{10}}\)
Rút gọn các phân số sau
2. 3 . 5 3 . 5 .7 = 2 7 ; 12. ( − 25 ) 30.18 = − 2 . 6 . 5 .5 5 . 2 .3.3. 6 = − 5 9
a ) ( − 2 ) .7 7.5 ; b ) 3. ( − 5 ) 15. ( − 6 ) ; c ) ( − 6 ) .7 ( − 7 ) . ( − 8 )
d ) 9. ( − 13 ) 13. ( − 12 ) ; e ) ( − 21 ) . ( − 5 ) 15. ( − 7 ) ; f ) 32.9.11 12.24.22
Rút gọn phân số sau:
\(\frac{7.4^5.3^{11}+2^{13}.9^5}{6^{10}+2^{12}.3^{10}}\)
ai trình bày cách giải rõ ràng nhất tick cho 3 cái
1)Rút gọn biểu thức
\(\frac{7.4^5.3^{11}+2^{13}.9^5}{6^{10}+2^{12}.3^{10}}\)
Rút gọn các phân số sau
a) ( − 6 ) .7 ( − 7 ) . ( − 8 )
b) 9. ( − 13 ) 13. ( − 12 )
Rút gọn phân số sau: (7.45.311+213.95)/(610+212.310)
7.45.311+213.95 / 610+212.310(rút gọn phân số)
Rút gọn\(a, 2^12×3^5-4^6×9^2 / 12^6+8^4×35 b, 5^10×7^3-25^5×49^2/(125×7)^3+5^9×14^3\)