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28 tháng 9 2015

=\(3^3\left(22-19\right)\)

=\(3^3.3\)

=\(3^4\)=81

 

 

28 tháng 9 2015

 

3^3.22-3^3.19 

= 33 ( 22-19 )

= 33 . 3

= 81

29 tháng 1 2023

\(\left\{210:\left[16+3.\left(6+3.22\right)\right]\right\}-3\)

\(=\left\{210:\left[16+3.\left(6+66\right)\right]\right\}-3\)

\(=\left\{210:\left[16+3.72\right]\right\}-3\)

\(=\left\{210:\left[16+216\right]\right\}-3\)

\(=\left\{210:232\right\}-3\)

\(=\dfrac{105}{116}-3\)

\(=\dfrac{-243}{116}\)

13 tháng 11 2023

\(\left\{210:\left[16+3.\left(6+3.2^2\right)\right]\right\}-3\)

\(=\left\{210:\left[16+3.\left(6+3.4\right)\right]\right\}-3\)

\(=\left\{210:\left[16+3.\left(6+12\right)\right]\right\}-3\)

\(=\left\{210:\left[16+3.18\right]\right\}-3\)

\(=\left\{210:\left[16+54\right]\right\}-3\)

\(=\left\{210:70\right\}-3\)

\(=3-3\)

\(=0\)

4 tháng 10 2020

\(3^2+2^4.3^3.19+3^5=9+16.27.19+243=9+8208+243=8460\)

32 + 24 . 33 .19 + 35

= 9 + 16 . 27 . 19 + 243

= 9 + 8208 + 243

= 8460

#Học tốt!!!

~NTTH~

6 tháng 4 2018

23 tháng 6 2022

a 27 . 75 + 25 . 27 - 150

= 27 . ( 75 + 25 ) - 150

= 27 . 100 - 150

= 2700 - 150

2550

`#3107.101107`

a)

\(5\left(x-1\right)^3=40\\\Rightarrow\left(x-1\right)^3=40\div5\\ \Rightarrow\left(x-1\right)^3=8\\ \Rightarrow\left(x-1\right)^3=2^3\\ \Rightarrow x-1=2\\ \Rightarrow x=2+1\\ \Rightarrow x=3\)

Vậy, `x = 3`

b)

\(3^{2x+1}+9^x=324?\\ \Rightarrow3^{2x}\cdot3+3^{2x}=324\\ \Rightarrow3^{2x}\cdot\left(3+1\right)=324\\ \Rightarrow3^{2x}\cdot4=324\\ \Rightarrow3^{2x}=81\\ \Rightarrow3^{2x}=3^4\\ \Rightarrow2x=4\\ \Rightarrow x=2\)

Vậy, `x = 2`

c)

\(5^x-13=3\cdot2^2\\ \Rightarrow5^x-13=12\\ \Rightarrow5^x=12+13\\ \Rightarrow5^x=25\\ \Rightarrow5^x=5^2\\ \Rightarrow x=2\)

Vậy, `x = 2`

d)

\(8^x+2^{3x+1}=192\\ \Rightarrow2^{3x}+2^{3x}\cdot2=192\\ \Rightarrow2^{3x}\left(1+2\right)=192\\ \Rightarrow2^{3x}\cdot3=192\\ \Rightarrow2^{3x}=64\\ \Rightarrow2^{3x}=2^6\\ \Rightarrow3x=6\\ \Rightarrow x=2\)

Vậy, `x = 2.`

2 tháng 12 2021

a) 232 - (581 + 132 - 331)

= 232 - 581 - 132 + 331

= (232 - 132) - (581 - 331)

= 100 - 250

= - (250 – 100)

= - 150

b) [12 + (-57)] - [- 57 - (-12)]

= (12 – 57) – (- 57 + 12)

= 12 - 57 + 57 - 12

= (12 – 12) + (57 – 57)

= 0 + 0

= 0

2 tháng 12 2021

a) 232 - (581 + 132 - 331)

= 232 - 581 - 132 + 331

= (232 - 132) - (581 - 331)

= 100 - 250

= - (250 – 100)

= - 150

b) [12 + (-57)] - [- 57 - (-12)]

= (12 – 57) – (- 57 + 12)

= 12 - 57 + 57 - 12

= (12 – 12) + (57 – 57)

= 0 + 0

= 0

1: \(23+\left(-13\right)+\left(-50\right)\)

\(=23-13-50\)

=10-50

=-40

2: \(-5+15+\left(-123\right)\)

\(=\left(-5+15\right)-123\)

=10-123

=-113

3: \(5871:\left\{928-\left[\left(-82+247\right)\right]\right\}\cdot5\)

\(=5871-\left\{928+82-247\right\}\cdot5\)

\(=5871-763\cdot5=5871-3815=2056\)

4: \(40-\left(4\cdot5^2-3\cdot2^3\right)\)

\(=40-4\cdot5^2+3\cdot2^3\)

\(=40-4\cdot25+3\cdot8\)

=40-100+24

=64-100

=-36

5: \(6^2\cdot5-7^2+149\)

\(=36\cdot5-49+149\)

\(=180+149-49\)

=180+100

=280

6: \(-210:\left[16+3\cdot\left(6+3\cdot2^2\right)\right]+\left(-2022\right)\)

\(=-210:\left[16+3\cdot\left(6+3\cdot4\right)\right]+\left(-2022\right)\)

\(=-210:\left[16+3\cdot18\right]+\left(-2022\right)\)

\(=-210:70-2022\)

=-3-2022

=-2025

7: \(5\cdot2^3+7^{11}:7^9-2023^0\cdot1^8\)

\(=5\cdot8+7^2-1\)

=40+49-1

=39+49

=88

8: \(400:\left\{5\cdot\left[360-\left(290+2\cdot5^2\right)\right]\right\}\)

\(=400:\left\{5\cdot\left[360-290-2\cdot25\right]\right\}\)

\(=400:\left\{5\cdot20\right\}\)

\(=\dfrac{400}{100}=4\)

9: \(75-\left(3\cdot5^2\right)-4\cdot5^3\)

\(=75-3\cdot25-4\cdot5^3\)

=-4*125

=-500