\(23.73+23.22+86\)

\(=23.73+23.22+23.5-29\)

\(=\left(73+22+5\right).23-29\)

\(=100.23-29\)

\(=2300-29\)

\(=2271\)

23.73+23.22+86 

=2271

Giải như Khong Biet

(2n+7)chia hết cho(n+1)

Tìm n

\(56:54+23.22-12017\)

\(=56.\dfrac{1}{54}+506-12017\)

\(=\dfrac{28}{27}-11511\)

\(=-11509,96296\)

\(5^6:5^3+2^3\cdot2^2-127\)

\(=5^3+2^5-127\)

=125+32-127

=32-2

=30

36:32 + 23.22 = 36-2 + 23+2 = 34 + 25 = 81 + 32 = 113

2x + 5 = 3³ : 3² + 2³.2²

2x + 5 = 3 + 2⁵

2x + 5 = 3 + 32

2x + 5 = 35

2x = 35 - 5

2x = 30

x = 30 : 2

x = 15

\(2^3\cdot2^2=2^{3+2}=2^5\)

=> CHọn B

Câu B

36:32+23.22

=1.125+506

=507.125

(39.42-37.42):42

=42.(39-37) :42

=42 .2 :42

=84 : 42

=2 

tick giúp tớ

a: Sửa đề: \(2^3\cdot2^2-\left(5^6:5^4-2010^0-24\right)^3-14\)

\(=2^5-\left(5^2-1-24\right)^3-14\)

\(=32-\left(25-1-24\right)^3-14\)

=32-14

=18

b: \(\left(-480\right):\left\lbrack75+\left(7^2-8\cdot3\right):5\right\rbrack+2021^2\)

\(=\left(-480\right):\left\lbrack75+\frac{_{}\left(49-24\right)}{5}\right\rbrack+2021^2\)

\(=-480:\left(75+\frac{25}{5}\right)+2021^2\)

\(=-480:80+2021^2=2021^2-6=4084435\)