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1)
33 . 18 + 72 . 42 - 41 . 18
= 33 . 18 + 18 . 43 - 41 . 18
= 18 . ( 33 + 43 - 41 )
= 18 . 50
= 900
2) ( 56 . 46 - 25 . 23 ) : 23
= ( 112 . 23 - 25 . 23 ) : 23
= ( 112 - 25 ) . 23 : 23
= 87 . 23 : 23
= 87
3) ( 76 . 34 - 19 . 64 ) : ( 38 . 9 )
= ( 19 . 136 - 19 . 64 ) : ( 19 . 18 )
= 19 . ( 136 - 64 ) : ( 19 . 18 )
= 19 . 72 : 19 . 18
= 19 . 4
= 76
4) ( 5 . 411 - 3 . 165 ) : 410
= ( 5 . 411 - 3 . 410 ) : 410
= ( 20 . 410 - 3 . 410 ) : 410
= ( 20 - 3 ) . 410 : 410
= 17
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3^3.18+72.4^2-41.18=27.18+18.64-41.18=18(27+64-41)=18.50=900
(56.46-25.23);23=(112.23-25.23):23=87.23:23=87
(28.54+56.36):21:2=(28.54+28.72):21:2=28.126:21:2=(28:2).(126:21)=14.6=84
(2+4+6+....+100)(36.333-108.111)=(2+4+6+100)(108.111-108.111)=0
(5.4^11-3.16^5):4^10=(5.4^11-3.4^10):4^10=5.4-3=17
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=( 5 . 4 ^11 - 3. 4^2.5 ) : 4^10
= ( 5 . 4^11 - 3 . 4^10 ) : 4^10
= 4^10 ( 5.4 - 3 ) : 4^10
= 5.4 - 3
= 17
ĐÚng cho mình nha
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5.411-3.4.45):410
=( 5 . 4 ^11 - 3. 4^2.5 ) : 4^10
= ( 5 . 4^11 - 3 . 4^10 ) : 4^10
= 4^10 ( 5.4 - 3 ) : 4^10
= 5.4 - 3
= 17
ĐÚng cho mình nha
![](https://rs.olm.vn/images/avt/0.png?1311)
36.33-105.11+22.15
=1188-1155+330
=33+330
=363
\(36\cdot33-105\cdot11+22\cdot15\)
\(=11\cdot\left(36\cdot3-105+2\cdot15\right)\)
\(=11\cdot\left(108-105+30\right)\)
\(=11\cdot33\)
\(=33\cdot\left(10+1\right)\)
\(=330+33\)
\(=363\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\left(5.4^{11}-3.16^5\right):4^{10}=\left(5.4^{11}-3.4^{10}\right):4^{10}\)
\(=5.4^{11}:4^{10}-3.4^{10}:4^{10}\)
\(=\frac{5.4^{11}}{4^{10}}-\frac{3.4^{10}}{4^{10}}=5.4-3=20-3\)
\(=17\)
(5.411 - 3.165) : 410
= 5.411:410 - 3.165:410
= 5 .(411:410) - 3. (42)5 : 410
= 5. 4 - 3. (410 : 410)
= 20 - 3.1
= 20 - 3
= 17
Chúc bn học tốt!!!
![](https://rs.olm.vn/images/avt/0.png?1311)
(5*411-3*165):410
=[5*(22)11-3*(24)5)]:(22)10
=[5*222-3*220]:220
=[5*22*220-3*220]:220
=[20*220-3*220]:220
=220[20-3]:220
=17
![](https://rs.olm.vn/images/avt/0.png?1311)
a. ( 23 - 21) + ( 19 - 17) + ( 15 - 13) + ( 11 - 9) + ( 7 - 5) + ( 3 - 1)
= 2 + 2 + 2 + 2 + 2 + 2
= 2 x 6
= 12
b. ( 24 - 22 ) + ( 20 - 18 ) + ( 16 - 14 ) + ( 12 - 10) + ( 8 - 6 ) + ( 4 - 2)
= 2 + 2 + 2 + 2 + 2 + 2
= 2 x 6
= 12