80 - ( 4.52 - 3.23) = ???
80 - ( 4.5\(^2\) - 3.2 \(^3\) )
80 - (4.52 - 3.23)
= 80 - (4.25 - 3.8)
= 80 - (100 - 24)
= 80 - 76
= 4
80-(4.5^2-3.2^3)=..............?
80 - (4.52 - 3.23)
= 80 - (4.25 - 3.8)
= 80 - (100 - 24)
= 80 - 76
= 4
80-(4.5^2-3.2^3)=2^10-(x-4)
\(80-\left(4.5^2-3.2^3\right)=2^{10}-\left(x-4\right)\\ 80-\left(4.25-3.8\right)=1024-\left(x-4\right)\\ 80-\left(100-24\right)=1024-\left(x-4\right)\\ 80-76=1024-\left(x-4\right)\\ 4=1024-\left(x-4\right)\\ x-4=1024-4\\ x-4=1024-4\\ x-4=1020\\ x=1020+4\\ x=1024\)
80-(4.52-3.23)=210-(x-4)
80-(4.25-3.8)=1024-(x-4)
80-(100-24)=1024-(x-4)
80-76=1024-(x-4)
4=1024-(x-4)
4-1024= x-4
1020= x-4
1020+4=x
1024=x
`81 - (4 . 5^2 - 3 . 2^3) = 2^10 - (x-4)`
`=> 81-(4 . 25 - 3 . 8) = 1024-(x-4)`
`=> 81 - (100-24)=1024-(x-4)`
`=> 81 - 76=1024-(x-4)`
`=> x-4=1024-4`
`=>x-4=1020`
`=> x=1020+4`
`=> x=1024`
1. 25.124-24.25+212
2. 80-4.5^2+3.2^3
3.35.48+65.68+20.35
4.2^7:2^3+2^3.2^0-1^10
80-(4.52-3.23)=210-(x-4)
\(80-\left(4.5^2-3.2^3\right)=2^{10}-\left(x-4\right)\) )
=> \(80-\left[2^2\left(5^2-3.2\right)\right]=2^{10}-x+4\)
=> \(80-\left[2^2\left(25-6\right)\right]=2^{10}-x+4\)
=> \(80-\left(4.19\right)=2^{10}-x+4\)
=> \(80-76-4=2^{10}-x\)
=> \(2^{10}-x=0\)
=> \(x=1024\)
5.4² - 18 : 3²
6² : 4.3 + 2.5³
80 - ( 4.5² - 3.2³)
\(5\cdot4^2-18:3^2\)
\(=5\cdot16-18:9\)
\(=80-2\)
\(=78\)
________________
\(6^2:4\cdot3+2\cdot5^3\)
\(=36:12+2\cdot125\)
\(=3+250\)
\(=253\)
_______________
\(80-\left(4\cdot5^2-3\cdot2^3\right)\)
\(=80-\left(4\cdot25-3\cdot8\right)\)
\(=80-\left(100-24\right)\)
\(=80-76\)
\(=4\)
6² : 4 . 3 + 2 . 5³
= 36 : 4 . 3 + 2 . 125
= 9 . 3 + 250
= 27 + 250
= 277
Hai bài còn lại xem của bạn Phong nhé. Bài này Phong giải chưa chính xác nên Thầy giải lại cho em!
80-[4.52-3.23 ]=210-(x-4)
90-[4.52-3.23]=210-(x-40
90-[100-24]=210-(x-4)
90-76=210-(x-4)
14=1024-(x-4)
x-4=1024-14
x-4=1010
x=1010+4
x=1014
số đo slaf
x=1014
nhé bn
mình ko biết
đúng ko
80-[4.52-3.23 ]=210-(x-4)
210- (x-4)=80-24
210 - (x-4)=1024-56
x=968+4=972
mk đg phân vân lm vầy sai hay đúng nên mới hỏi các bn góp ý nha
5⁶ : 5³ +2³ :2²
3333 : 3 + 225 :15
15.2³ + 4.3² - 5.7
5.4² - 18 :3²
6² : 4.3 +2.5²
80 - ( 4.5² -3.2³)
Tính
5⁶ : 5³ +2³ :2²
3333 : 3 + 225 : 15
15 . 2³ + 4.3² -5.7
5.4² - 18 : 3²
6² : 4.3 + 2.5³
80 - ( 4.5² - 3.2³)
Lời giải:
a.
$=5^{6-3}+2^{3-2}=5^3+2^1=125+2=127$
b.
$=3333:3+225:15=1111+15=1126$
c.
$=15.2^3+4.3^2-5.7=15.8+4.9-35=120+36-35=120+1=121$
d.
$=5.4^2-18:3^2=5.16-18:9=80-2=78$
e.
$=6^2:4.3+2.5^3=36:4.3+2.125$
$=9.3+250=27+250=277$
f.
$=80-(4.25-3.8)=80-(100-24)=80-100+24=-20+24=4$
Tính
5⁶ : 5³ +2³ :2²
3333 : 3 + 225 : 15
15 . 2³ + 4.3² -5.7
5.4² - 18 : 3²
6² : 4.3 + 2.5³
80 - ( 4.5² - 3.2³)