(3/3 + 6/6) - 2
>, <, =?
| 6…5 | 3…6 | 6…1 | 3…3 |
| 6…4 | 6…3 | 4…2 | 3…5 |
| 6…2 | 6…6 | 2…6 | 3…4 |
Lời giải chi tiết:
| 6 > 5 | 3 < | 6 > 1 | 3 = 3 |
| 6 > 4 | 6 > 3 | 4 > 2 | 3 < 5 |
| 6 > 2 | 6 = 6 | 2 < 6 | 3 < 4 |
Số?
| 5 + 1 = … | 4 + 2 = … | 3 + 3 = … |
| 1 + … = 6 | … + 4 = 6 | … + 3 = 6 |
| 6 – 5 = … | 6 – 2 = … | 6 – 3 = … |
| 6 – 1 = … | 6 – 4 = … | 6 - … = 3 |
Lời giải chi tiết:
| 5 + 1 = 6 | 4 + 2 = 6 | 3 + 3 = 6 |
| 1 + 5 = 6 | 2 + 4 = 6 | 3 + 3 = 6 |
| 6 – 5 = 1 | 6 – 2 = 4 | 6 – 3 = 3 |
| 6 – 1 = 5 | 6 – 4 = 2 | 6 - 3 = 3 |
\(x^3=\left(\sqrt[3]{5+2\sqrt{6}}+\sqrt[3]{5-2\sqrt{6}}\right)^3=\sqrt[3]{5+2\sqrt{6}}^3\)
\(+3\sqrt[3]{\left(5+2\sqrt{6}\right)^2}.\sqrt[3]{5-2\sqrt{6}}+3\sqrt[3]{5+2\sqrt{6}}.\sqrt[3]{\left(5-2\sqrt{6}\right)^2}+\sqrt[3]{5-2\sqrt{6}}^3\)
\(=5+2\sqrt{6}+3\sqrt[3]{\left(5+2\sqrt{6}\right)\left(5-2\sqrt{6}\right)}.\sqrt[3]{5+2\sqrt{6}}\)
\(+3\sqrt[3]{\left(5+2\sqrt{6}\right)\left(5-2\sqrt{6}\right)}.\sqrt[3]{5-2\sqrt{6}}+5-2\sqrt{6}\)
\(=5+5+3\sqrt[3]{\left(25-4.6\right)}.\sqrt[3]{5+2\sqrt{6}}+3\sqrt[3]{\left(25-4.6\right)}.\sqrt[3]{5-2\sqrt{6}}\)
\(=10+ 3\sqrt[3]{5+2\sqrt{6}}+3\sqrt[3]{5-2\sqrt{6}}\)
p/s : có bạn hỏi nên mình đăng , các bạn đừng report nhé
Tính:
| 6 – 3 – 1 = … | 1 + 3 + 2 = … | 6 – 1 – 2 = … |
| 6 – 3 – 2 = … | 3 + 1 + 2 = … | 6 – 1 – 3 = … |
Lời giải chi tiết:
| 6 – 3 – 1 = 2 | 1 + 3 + 2 = 6 | 6 – 1 – 2 = 3 |
| 6 – 3 – 2 = 1 | 3 + 1 + 2 = 6 | 6 – 1 – 3 = 2 |
| 6 – 3 – 1 = 2… | 1 + 3 + 2 = 6… | 6 – 1 – 2 = 3… |
| 6 – 3 – 2 = 1… | 3 + 1 + 2 = 6… | 6 – 1 – 3 = 2… |
| 6 – 3 – 1 = 2 | 1 + 3 + 2 = 6 | 6 – 1 – 2 = 3 |
| 6 – 3 – 2 = 1 | 3 + 1 + 2 = 6 | 6 – 1 – 3 = 2 |
HT nhé
Tính:
1 + 3 + 2 = 6 - 3 -1 = 6 - 1 - 2 =
3 + 1 + 2 = 6 - 3 -2 = 6 - 1 - 3 =
1 + 3 + 2 = 6 6 - 3 -1 = 2 6 - 1 - 2 = 3
3 + 1 + 2 = 6 6 - 3 -2 = 1 6 - 1 - 3 = 2
1 + 3 + 2 =6 6 - 3 -1 =2 6 - 1 - 2 =3
3 + 1 + 2 = 6 6 - 3 -2 = 1 6 - 1 - 3 =2
Rút gọn: (6 ^ 6 + 2 ^ 7 * 3 ^ 6 + 2 ^ 6 * 3 ^ 7)/(4.2 ^ 3 * 3 ^ 2 * 2 ^ 2)
\(\dfrac{6^6+2^7.3^6+2^6.3^7}{4.2^3.3^2.2^2}\)
\(=\dfrac{\left(2^2.3\right)^6+2^7.3^6+2^6.3^7}{2^2.2^3.3^2.2^2}\)\(=\dfrac{2^{12}.3^6+2^7.3^6+2^6.3^7}{2^7.3^2}\)
\(=\dfrac{2^6.3^6.\left(2^6+2+3\right)}{2^7.3^2}\)\(=\dfrac{3^4.69}{2}=\dfrac{5589}{2}\)
Tính:
5 +1 = 4 + 2 = 3 + 3 =
6 - 5 = 6 - 2 = 6 - 3 =
6 - 1 = 6 - 4 = 6 - 6 =
5 +1 = 6 4 + 2 = 6 3 + 3 = 6
6 - 5 = 1 6 - 2 = 4 6 - 3 = 3
6 - 1 = 5 6 - 4 = 2 6 - 6 = 0
5 +1 = 6 4 + 2 = 6 3 + 3 =6
6 - 5 =1 6 - 2 =4 6 - 3 =2
6 - 1 = 5 6 - 4 = 2 6 - 6 =0
>, <, = ?
| 2 + 3 … 6 | 3 + 3 … 5 | 6 – 0 … 4 |
| 2 + 4 … 6 | 3 + 2 … 5 | 6 – 2 … 4 |
Lời giải chi tiết:
| 2 + 3 < 6 | 3 + 3 > 5 | 6 – 0 > 4 |
| 2 + 4 = 6 | 3 + 2 = 5 | 6 – 2 = 4 |
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
1: =1/8*9/4=9/32
2: =8/27*243/32=9/4
3: =(5/4*4/5)^5*(4/5)^2=16/25
4: \(=\left(-\dfrac{5}{6}\cdot\dfrac{6}{5}\right)^2\cdot\left(\dfrac{6}{5}\right)^2=\dfrac{36}{25}\)
5: \(=\left(-\dfrac{4}{3}\right)^3\cdot\left(\dfrac{3}{4}\right)^{10}=\left(-1\right)\left(\dfrac{3}{4}\right)^7=-\left(\dfrac{3}{4}\right)^7\)
6: \(=\left(\dfrac{1}{3}\cdot\dfrac{-9}{2}\right)^4\left(-\dfrac{9}{2}\right)^2=\left(-\dfrac{3}{2}\right)^4\cdot\dfrac{81}{4}=\dfrac{9}{4}\cdot\dfrac{81}{4}=\dfrac{729}{16}\)
8: =(0,2*5)^4*5^2=25
10: =-0,5^5*2^10
=-0,5^5*2^5*2^5
=-32
13: =(0,5*2)^2*2^2=4
Tính:
6 - 4 -2 = 6 - 2 - 2 = 6 - 3 - 3 =
6 - 2 -4 = 6 - 1 - 2 = 6 - 6 =
6 - 4 - 2 = 0 6 - 2 - 2 = 2 6 - 3 - 3 = 0
6 - 2 - 4 = 0 6 - 1 - 2 = 3 6 - 6 = 0
6 - 4 -2 = 0 6 - 2 - 2 = 2 6 - 3 - 3 =0
6 - 2 -4 =0 6 - 1 - 2 = 3 6 - 6 =0 nha em, chúc em năm mới học giỏi và cố gắng lên lớp 2 giống anh nha!