Các câu hỏi tương tự
\(3-27.3^2-.....-27.3^{30}-27.3^{31}=?\)
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
a)27.3 mũ x = 3 mũ 10
b)60+3x=9 mũ 10:9 mũ 8
c)23-3(4+x)=3
Bài 1:Tìm NeN: a) 5^n=125 ; b) 3^4.3^n=3^7; c) 27.3^n=243; d) 49.7^n=2401; e)68^n : 17^n= 64^3
Xem chi tiết
1. Tìm x
a) 34 .3n=37
b)27.3n=243
c)49.7n=2041
(3x-6).3=27.3
Tìm x
2x - 3 =17
4² - 3x =27.3 -77
48 + 2x = 3.2³
( 13x -12² ) : 5 =5
a.205-{102-[48-(16-14)mux3]}
b.{[10-2.3).5]+2-2.6}:2+(4+5)mũ2
c.(2 mũ3. 9 mũ 4+9 mũ3.45):(9 mũ 2.10-9 mũ 2)
d.18.[(3 mũ 4.24+3 mũ 4.4-27.3 mũ 4)-71.1 mũ 20]-8
25.5.4.57.2
58*76+24*58
265:5+27.3-43
a)9.5+8.10-27
b)36:9+100-27.3
c)29-[16+3.(51-49)]