\(a,\dfrac{20^5.5^{10}}{100^5}=\dfrac{20^5.5^5.5^5}{100^5}=\dfrac{100^5.5^5}{100^5}=5^5\)
\(a,\dfrac{20^5.5^{10}}{100^5}=\dfrac{20^5.5^5.5^5}{100^5}=\dfrac{100^5.5^5}{100^5}=5^5\)
4 mũ 5 nhân 9 mũ 4 trừ 2 x 6 mũ 9 phần 2 mũ 10 x 3 mũ 8 + 6 mũ 8 x 20
CMR: 116 - 115 + 114 \(⋮\) 111
165 + 219 - 89 \(⋮\) 10
Tìm GTLN của B = 4/5 + 20/ |3x+5| + |4y+5| +8
làm đc cho 10 like
Câu 1: Tinh
\(A=\left(\dfrac{3}{5}\right)^2.5^2-\left(2\dfrac{1}{4}\right)^3:\left(\dfrac{3}{4}\right)^3+\dfrac{1}{2}\)
\(B=\left[\dfrac{4}{11}.\left(\dfrac{1}{25}\right)^0+\dfrac{7}{22}.2\right]^{2010}-\left(\dfrac{1}{2^2}:\dfrac{8^2}{4^4}\right)^{2009}\)
\(\dfrac{7}{8}.\left(\dfrac{2}{12}+\dfrac{4}{10}\right)\)
\(\dfrac{3}{2}-\dfrac{5}{6}:\left(\dfrac{1}{2}\right)^2+\sqrt{4}\)
Câu 2: Tim x
\(2.x-\dfrac{5}{4}=\dfrac{20}{15}\)
\(\left(x+\dfrac{1}{3}\right)^3=\left(\dfrac{-1}{8}\right)\)
1, ( -2/5 + 3/10 ) : ( 2/-5 + |-4/3 - 2| )
2, 12,5 . -5/7 + 9 3/4 - 1,5 . 5/7
3, -1/4 . -5/13 - 5/4 . -7/13 + 1/1,3
4, ( -3/4 + 5/13 ) : 2/7 - ( 2 1/4 + 8/13 ) : 2/7
5, ( 3 - 3/4 + 2/3 ) - ( 2 - 4/3 - 3/2 ) - ( 1 - 7/3 - 9/2 )
6, -1/3 - 8/35 + -2/9 - 1/135 z+ 4/5 + -4/9 + 3/7
tính giá trị các biểu thức sau:
a) \(A=\dfrac{2^{15}.9^4}{6^6.8^3}\)
b) \(B=\dfrac{4^6.9^5+6^9.120}{-8^4.3^{12}-6^{11}}\)
c) \(C=\dfrac{4^5.9^4-2.6^9}{2^{10}.3^8+6^8.20}\)
có bn nào lm dc thì lm giúp mk vs nha mai mk nộp bài r
1. So sánh các tích sau một cách hợp lí nhất:
\(P_1=\dfrac{-43}{51}.\dfrac{-19}{80}\)
\(P_2=\dfrac{-7}{13}.\dfrac{-4}{65}.\dfrac{-8}{31}\)
\(P_3=\dfrac{-5}{10}.\dfrac{-4}{10}.\dfrac{-3}{10}...\dfrac{3}{10}\)
1.(x+1)/35 + (x+3)/33 = (x+5)/33 + (x+7)/20
2. (X+1)/12+ (X+2)/13 = (X+3)/14+ (X+4)/15
3. (X-85)/15+ (X-75)/13+(X-67)/11+ (X-64)/9=10
4. (X-1)/13-(2X-13)/15=(3X-15)/27- (4X-27)/29
\(C =\dfrac{4}{5}+\dfrac{20}{|3x+5|+|4y+5|+8}\)