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5 tháng 9 2016
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height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" 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height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300"><embed src="https://www.youtube.com/embed/vhcwrgVafCc?autoplay=1" width="400" height="300">
CD
1
VT
23 tháng 8 2016
a) 6,3 + (-3,7) + 2,4 + (-0,3)
= (6,3 + 2,4) + [-3,7 + (-0,3)]
= 8,7 + (-4)
= 4,7
b) (-4,9) + 5,5 + 4,9 + (-5,5)
= (-4,9 + 4,9) + [5,5 + (-5,5)]
= 0 + 0
= 0
c) 2,9 + 3,7 + (-4,2) + (-2,9) + 4,2
= [2,9 + (-2,9)] + (-4,2 + 4,2) + 3,7
= 0 + 0 + 3,7
= 3,7
d) (-6,5) . 2,8 + 2,8 . (-3,5)
= 2,8 . [-6,5 + (-3,5)]
= 2,8 . (-10)
= -28.
LT
3
8 tháng 6 2016
\(\frac{3^4.2^3-3^4.4}{3^5.3^2-3^5.5}=\frac{3^4.\left(2^3-4\right)}{3^5.\left(3^2-5\right)}=\frac{8-4}{3.\left(9-5\right)}=\frac{4}{3.4}=\frac{1}{3}\)
8 tháng 6 2016
\(\frac{3^4\cdot2^3-3^4\cdot4}{3^5.3^2-3^5\cdot5}=\frac{3^4\left(8-4\right)}{3^5\left(9-5\right)}=\frac{4}{3\cdot4}=\frac{1}{3}\)
NC
14 tháng 8 2020
Bài làm:
\(A=\frac{3^4.2^3-3^4.4}{3^5.3^2-3^5.5}\)
\(A=\frac{2^2.3^4\left(2-1\right)}{3^5\left(3^2-5\right)}\)
\(A=\frac{4.1}{3.4}=\frac{1}{3}\)
MT
0
OL
0
20 tháng 8 2019
làm ơn giúp mình ,bạn nào làm nhanh đúng mình chọn cho nhanh nha mọi người
5.5+6+4.2
=25+6+8
=31+8
=39
5.5+6+4.2
=25+6+8
=31+8
=39