Lời giải chi tiết:

2=1+1          6=2+4          8=5+3          10=8+2

3=1+2          6=3+3          8=4+4          10=7+3

4=3+1          7=6+1          9=8+1          10=6+4

4=2+2          7=5+2          9=7=2          10=5+5

5=4+1          7=4+3         9=6+3           10=10+0

5=3+2          8=7+1         9=5=4           10=0+10

6=5+1          8=6=2         10=9+1         1=0+1

cop hết mạng kìa

1: 2*2*2*2*2*2=2^6

2: x*x*x*x=x^4

3: =7^4*6^4=42^4

4: =5^2*3^2*4^2=60^2

5: =2*3^2*5^5

6: =10^3*10^3=10^6

Lời giải chi tiết:

\(a,A=\dfrac{\dfrac{5}{4}+\dfrac{5}{5}+\dfrac{5}{7}-\dfrac{5}{11}}{\dfrac{10}{4}+\dfrac{10}{5}+\dfrac{10}{7}-\dfrac{10}{11}}\\ =\dfrac{5.\left(\dfrac{1}{4}+\dfrac{1}{5}+\dfrac{1}{7}-\dfrac{1}{11}\right)}{10.\left(\dfrac{1}{4}+\dfrac{1}{5}+\dfrac{1}{7}-\dfrac{1}{11}\right)}\\ =\dfrac{5}{10}\\ =\dfrac{1}{2}\)

Vậy \(A=\dfrac{1}{2}\)

\(b,B=\dfrac{2+\dfrac{6}{5}-\dfrac{6}{7}-\dfrac{6}{11}}{\dfrac{2}{3}+\dfrac{2}{5}-\dfrac{2}{7}-\dfrac{2}{11}}\\ =\dfrac{3.\left(\dfrac{2}{3}+\dfrac{2}{5}-\dfrac{2}{7}-\dfrac{2}{11}\right)}{\dfrac{2}{3}+\dfrac{2}{5}-\dfrac{2}{7}-\dfrac{2}{11}}\\ =3\)

Vậy \(B=3\)

Xóa nhanh đi ko CTV xóa giờ

Chia chúng nó ra

Câu dễ vậy bạn cần hỏi

a)5.5.5.5.5.5=5⁶

b)6.6.6.3.2=6.6.6.6=6⁴

c)2.2.2.3.3=6.6.2=6².2

d)100.10.10.10=10.10.10.10.10=10⁵

Nguyễn ĐÌnh Dũng sai rồi, ai li ke vậy

a)5.5.5.5.5.5=5⁶

b)6.6.6.3.2=6.6.6.6=6⁴

c)2.2.2.3.3=2³.3²

d)100.10.10.10=10.10.10.10.10=10⁵

a) Ta có: \(\dfrac{-5}{7}\left(\dfrac{14}{5}-\dfrac{7}{10}\right):\left|-\dfrac{2}{3}\right|-\dfrac{3}{4}\left(\dfrac{8}{9}+\dfrac{16}{3}\right)+\dfrac{10}{3}\left(\dfrac{1}{3}+\dfrac{1}{5}\right)\)

\(=\dfrac{-5}{7}\cdot\dfrac{3}{2}\cdot\dfrac{21}{10}-\dfrac{3}{4}\cdot\dfrac{56}{3}+\dfrac{10}{3}\cdot\dfrac{8}{15}\)

\(=\dfrac{-9}{4}-14+\dfrac{16}{9}\)

\(=\dfrac{-1621}{126}\)

b) Ta có: \(\dfrac{17}{-26}\cdot\left(\dfrac{1}{6}-\dfrac{5}{3}\right):\dfrac{17}{13}-\dfrac{20}{3}\left(\dfrac{2}{5}-\dfrac{1}{4}\right)+\dfrac{2}{3}\left(\dfrac{6}{5}-\dfrac{9}{2}\right)\)

\(=\dfrac{-17}{26}\cdot\dfrac{13}{17}\cdot\dfrac{-3}{2}-\dfrac{20}{3}\cdot\dfrac{3}{20}+\dfrac{2}{3}\cdot\dfrac{-33}{10}\)

\(=\dfrac{3}{4}-1-\dfrac{11}{5}\)

\(=-\dfrac{49}{20}\)

a) 9 > 7     2 < 5     0 < 1     8 > 6

7 < 9     5 > 2     1 > 0     6 = 6

b) 6 > 4     3 < 8     5 > 1     2 < 6

4 > 3     8 < 10     1 > 0     6 < 10

6 > 3     3 < 10     5 > 0     2 = 2

Điền dấu >; < hoặc = vào chỗ trống:

a) 9 > 7     2 < 5     0 < 1     8 > 6

7 < 9     5 > 2     1 > 0     6 = 6

b) 6 > 4     3 < 8     5 > 1     2 < 6

4 > 3     8 < 10     1 > 0     6 < 10

6 > 3     3 < 10     5 > 0     2 = 2

a) 5⁶

b) 2³. 3²

c) 6.6.6.3.2=6.6.6.6=6⁴

d)100.10.10.10=10.10.10.10.10=10⁵

a) 5 . 5 . 5 . 5 . 5 . 5 . 5 = 5⁶

b) 6 . 6 . 6 . 3 . 2 = 6³ . 6¹

c) 2.2.2.3.3 = 2³ . 3² 

d) 100 . 10 . 10 . 10 = 10² . 10³