1
a)tinh nhanh neu co
p=(5.3^11+4.3^12):(3^9.5^2-3^9.2^3)
q=14.29+71.14+(1+2+3+.....+99).(199199.198-198198.199)
b)chung to 1.2.3.....2013.2015+2.4.6....2014.2016:9911
Tính hợp lý
(5.3^11+4.3^12):(3^9.5^2-3^9.2^3)
Tính : P=\(\frac{5.3^{11}+4.3^{12}}{3^9.5^2-3^9.2^3}\)
Thực hiện phép tính bằng cách hợp lí
Q=( 5.3^11+4.3^12) : ( 3^9.5^2 - 3^9 . 2^3 )
Thuc hien phep tinh) A = \(\frac{5.2^{30}.3^{18}-4.3^{20}2^{27}}{5.2^9.2^{19}.3^{19}-7.2^{29}.3^{18}}\)
Tìm x,biết
A) (-3)^2x=9^5
B) 9.5^ x-3=6.5^6+3.5^6
C) 5^x+4-3.5^x+3=5^11.2
D) 3^x+2+4.3^x+1=7.3^6
E) 5^x+3=10^5.6^3:4^4.3^3
Tính giá trị biểu thức sau:
1/ \(\frac{9.5^{20}.27^9-3.9^{15}.25^9}{7.3^{29}.125^6-3.3^9.15^{19}}\).
2/ \(\frac{5.\left(2^2.3^2\right)^9.\left(2^2\right)^6-2.\left(2^2.3\right)^{14}.3^6}{5.2^{28}.3^{19}-7.2^{29}.3^{18}}\)
3/ \(\frac{2^{12}.13+2^{12}.65}{2^{10}.104}+\frac{3^{10}.11+3^{10}.5}{3^9.2^4}\)
4/ \(\frac{5.4^{15}-9^9-4.3^{20}.8^9}{5.2^9.6^{19}-7.2^{29}.27^6}\)
5/ \(\frac{13.4^6.\left(28\frac{7}{13}-27\frac{5}{18}\right)}{59.2^{12}\left(\frac{5}{14}+\frac{5}{84}+\frac{5}{204}+\frac{5}{374}\right)}\)
Tặng người giải mỗi ngày ba điểm hđ :)
Tinh nhanh
A= -7/21 +(1+1/3)
B= 2/15 +(5/9+-6/9)
C= (-1/5+3/12)+-3/4
tinh nhanh
A=-7/21+(1+1/3)
B=2/15+(5/9+-6/9)
C =(-1/5+3/12)+-3/4
