b) 49^6.5-7^11/(-7)^10.5+2.49^5

2^12.3^5-4^6.3^6/2^12.9^3+8^4.3^5

Tính

\(\frac{2^{12}.3^5-4^6.3^6}{2^{12}.9^3+8^4.3^5}\)

\(\frac{49^6.5-7^{11}}{\left(-7\right)^{10}.5-2.49^5}\)

gửi đến bạn vũ thu trang

4^6x9^5+6^9x120/8^4x3^12-6^11

= (2^2)^6.(3^2)^5 + (2.3)^9.3.5.2^3 / (2^3)^4.3^12 - (2.3)^11

= 2^12.3^10 + 2^9.3^9.3.5.2^3 / 2^12.3^12 - 2^11.3^11

= 2^12.3^10 + 2^12.3^10.5 / 2^11.2. 3^11.3 - 2^11.3^11

= 2^12.3^10.(1+5) / 2^11.3^11.(6-1)

= 2^12.3^10.6 / 2^11.3^11.5

= 4/5

Rút gọn biểu thức sau theo cách hợp lí:

   P= \(\frac{2^{12}.3^5-4^6.3^6}{2^{12}.9^3+8^4.3^5}\)

Tính:

A) 2¹².3⁵ -4⁶.3⁶/ 2¹².9³+8⁴.3⁵

B) 49⁶.5-7¹¹/(-7)¹⁰.5+2.49⁵

Rút gọn\(a, 2^12×3^5-4^6×9^2 / 12^6+8^4×35 b, 5^10×7^3-25^5×49^2/(125×7)^3+5^9×14^3\)

Rút gọn biêu thức

A=3^2.45^4-15^3.9^3/3^3.45^4-5^4.3^10

B=6^30.3^11.7-2^31.5.3^40/2^28.17.3^38-6^27.3^11

C=35.27^8+70.9^11/15.81^6-60.3^20

D=4^6.6^7-9^3.8^6/12^5.2^8+18^3.32^3

rút gọn phân số sau 

M = \(\frac{9^4.27^5.3^6.3^4}{3^8.81^4.234.8^2}\)

N = \(\frac{4^6.9^5+6^9.120}{8^4.3^{12}-6^{11}}\)

ai nhanh mik tick cho

Rút gọn rồi quy đồng các phân số sau đây

a:\(\frac{7.12^3+2.12^3}{4^6.3^{11}}\) ;\(\frac{-17.10+17.6}{18.11+18.6}\);\(\frac{6.7.8.10}{9.12.14.15}\)

b:4.3^9+8.(-3)^7/(-3)^10+20.(-3)^7

   5^6.8-5^7/5^8-7/5^6

  -1997.1996+1/(-1995).(-1997)+1996