289<9x< hoặc bằng 327
Tính M= ( căn 289-1)×(căn 289 -2)×( căn 289-3)×.......×(căn 289-100)
( 289 - 12 ) . ( 289 - 22) ... ( 289 - 202)
đây là hiệu 20 số đó khi thấy trong phép nhân có thừa số 0 thì dãy đó=0;288*285*280*273*264*253*240*225*208*189*168*145*120*93*64*33*0
vậy dãy đó băngf 0
( 57 - 289 ) - ( 76 - 289 ) + ( 176 + 43 )
\(\left(57-289\right)-\left(76-289\right)+\left(176+43\right)\)
\(=\) \(\left(-232\right)\) \(-\) \(\left(-213\right)\) \(+\) \(219\)
\(=\) \(\left(-19\right)+219\)
\(=200\)
(57 - 289 ) - ( 76 - 289 ) + ( 176 + 43 )
= 57 - 289 - 76 +289 +176 +43
= (57 + 43 ) + ( -289 +289 ) + ( - 76 + 176 )
= 100 +100
=200
( 57 - 289 ) - ( 76 - 289 ) + ( 176 + 43 )=200
-(-3793+289)+(-3793+289)+(-37)
trình bày hộ mình
-(-3793+289)+(-3793+289)+(-37)
=3793-289-3793+289-37
= (3793-3793) +(289-289)-37
=-37
tìm x; 3-(17-x)=289-(36+289)
Sao ban chui ban ay?
3-(17-x)=289-(36+289)
3-(17-x)=-36
17-x=-36+3
17-x=39
x=17-39
x=-22
Nho cho mk nhe!!!!!!
3-(17-x)=289-(36+289)
3-(17-x)=-36
17-x=39
x=17-39
x=-22
Vay x=-22
Nho cho mk 1 h nha!!!
\(\text{3 - ( 17 - x ) = 289 - ( 36 + 289 )} \)
\(\text{=> 3 - 17 + x = 289 - 289 - 36}\)
\(\text{=> -14 + x = 0 - 36}\)
\(\text{=> x - 14 = -36}\)
\(\text{=> x = -36 + 14}\)
\(\text{=> x = -22}\)
\(\text{Vậy : x = -22}\)
3x10=? 8x9=?
727-289=? 900-900=?
289-288=? 190-100=?
`#3107.101107`
3 x 10 = 30
727 - 289 = 438
289 - 288 = 1
8 x 9 = 72
900 - 900 = 0
190 - 100 = 90
3x10=30
8x9=72
727-289=438
900-900=0
289-288=1
190-100=90
3x10=30 8x9=72
727-289=438 900-900=0
289-288=1 190-100=90
CHÚC BẠN HỌC TỐT!
Tính
(196-12).(196-22).(196-32)....(196-192)
(289-12).(289-22).(289-32)....(289-292)
tính nhanh
289*57+311*45+289*43+311*55
289 x 57 + 311 x 45 + 289 x 43 + 311 x 55
= 289 x ( 57 + 43 ) + 311 x ( 45 + 55 )
= 289 x 100 + 311 x 100
= ( 289 + 311 ) x 100
= 600 x 100
= 60000
\(289x57+311x45+289x43+311x55\)\(=289x\left(57+43\right)+311x\left(45+55\right)\)
\(=289x100+311x100=100x\left(289+311\right)\)\(=100x600=60000\)
\(\dfrac{12-\dfrac{12}{7}-\dfrac{12}{289}-\dfrac{12}{85}}{4-\dfrac{4}{7}-\dfrac{4}{289}-\dfrac{4}{85}}=\)
\(=\dfrac{3.4-\dfrac{3.4}{4}-\dfrac{3.4}{289}-\dfrac{3.4}{85}}{4-\dfrac{4}{7}-\dfrac{4}{289}-\dfrac{4}{85}}=\dfrac{3.\left(4-\dfrac{4}{7}-\dfrac{4}{289}-\dfrac{4}{85}\right)}{1.\left(4-\dfrac{4}{7}-\dfrac{4}{289}-\dfrac{4}{85}\right)}=\dfrac{3}{1}=3\)
7x-(-14)=21 ; ( 2-x):(-3)= 3-(-9) ; 3-(17x)= -289-(36-289) . Giúp mình với ...
a:=>7x+14=21
=>7x=7
=>x=1
b: =>(x-2):3=3+9=12
=>x-2=36
=>x=38
c: =>3-17x=-289-36+289=-36
=>17x=39
=>x=39/17