\(4^5+4^5+4^5+4^5-4.4.4.4.4.4\)
\(=4^5\left(1+1+1+1\right)-4^6\)
\(=4^5.4-4^6=4^6-4^6=0\)
4^5+4^5+4^5+4^5-4.4.4.4.4.4
=4^5.4-4^6
=4^6-4^6
=0
\(4^5+4^5+4^5+4^5-4.4.4.4.4.4\)
\(=4^5+4^5+4^5+4^5-4^6\)
\(=4^{5.4-6}\)
\(=4^{20-6}\)
\(=4^{14}\)
\(4^5+4^5+4^5+4^5-4.4.4.4.4.4\)
\(=4^5\left(1+1+1+1\right)-4^6\)
\(=4^5.4-4^6=4^6-4^6=0\)
4^5+4^5+4^5+4^5-4.4.4.4.4.4
=4^5.4-4^6
=4^6-4^6
=0
\(4^5+4^5+4^5+4^5-4.4.4.4.4.4\)
\(=4^5+4^5+4^5+4^5-4^6\)
\(=4^{5.4-6}\)
\(=4^{20-6}\)
\(=4^{14}\)
Bài 1:Tính
1) (1/2)^3 (3/2)^2
2) (2/3)^3 (3/2)^5
3) (5/4)^5 (4/5)^7
4) (-5/6)^6 (6/5)^8
5)(-4/3)^3 (9/16)^5
6) (1/3)^4 (-9/2)^6
7)(-4/9)^3 (-27/20)^4
8) (0,2)^4 . 5^6
9) (-4/3)^3 (9/16)^5
10) (-0,2)^3 .(-5)^5
11) (-4)^4 .(0,25)^6
12) $^2 . (0,2)^3
13) (0,5)^2 . 2^4
14) (-0,5)^3 .2^6
15) (-0,5)^5 .(-2)^10
16) (0,125)^2 .8^4
17) (0,125)^5 . (-8)^4
18) (-0,125)^7 . 8^10
19) (-0,1)^4 . 10^7
20) (0,1)^5 . (-10)^10
Giúp mình với ạ,mình cảm ơn ạ
Tính
1. 6/5 - 1/4 + 4/5 - 3/4
2. 7/9 - 5/12 + 2/9 - 7/12
3. -4/15 + 5/13 - 11/15 + 8/13
4. 9/15 - 7/13 +6/15 - 6/13
5. 12/5 - 3/7 + 3/5 - 4/7
6. 6/5 - 1/4 + 4/5 - 3/4 + 1/2
7. 13/7 - 8/6 + 8/7 - 4/6 - 1/3
Tìm x biết
\(\dfrac{4^5+4^5+4^5+4^5}{3^5+3^5+3^5++3^5}\cdot\dfrac{6^5+6^5+6^5+6^5+6^5+6^5}{2^5+2^5}=8^{\left|2x+6\right|}\)
Bài 1:Tính
\(\frac{\frac{1}{3}-\frac{4}{5}}{\frac{1}{3}+\frac{4}{5}}.\frac{\frac{3}{4}-\frac{5}{3}}{\frac{3}{4}+\frac{5}{3}}:\frac{\frac{4}{5}-1}{1-\frac{2}{3}}\)
(-3/8+5/32):-4/5-(-3/5) mũ 3 + -5/8+27/32.5/4
3.a: -3/2-2x+3/4=-4
b: (-2/3.x-3/5).(3/-2-10/3)=2/5
c: x/2-(3x/5-13/5)=-(7/5+7/10x)
d: (3/2-5/11-3/13).(2x-2)=(-3/4+5/22+3/26)
e: 2/3x-3/12=4/5-(7/x-2)
A=\(\frac{\frac{1}{3}-\frac{5}{2}}{\frac{3}{4}-\frac{1}{2}}\).\(\frac{\frac{5}{6}+\frac{7}{3}}{1-\frac{5}{6}}\).\(\frac{-\frac{2}{5}+1}{\frac{2}{5}+1}\)
B=\(\frac{\frac{1}{3}-\frac{4}{5}}{\frac{1}{3}-\frac{4}{5}}\).\(\frac{\frac{3}{4}-\frac{5}{3}}{\frac{3}{4}+\frac{5}{3}}\):\(\frac{\frac{4}{5}-1}{1-\frac{2}{3}}\)
mong mọi người giải giúp em
1. Tính hợp lí
a, 6/7 . 5/11 + 5/7 . 2/11 - 5/7 . 14/ 11
b, 1/3 . 4/5 + 1/3 . 6/5 - 1/3
( Hỗn số )
c, 11/3/13 - (2/4/7 + 5/3/13)
d, 2/7 . 5/1/4 - 2/7 . 3/1/4
e, 75 . (-4/24 + 7/1/15 - 5/7/15)
Giải hộ mình với ạ!