![](https://rs.olm.vn/images/avt/0.png?1311)
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
Câu A là :2x19x6+3x37x4+44x12=228+444+528=1200
Câu B là:18x15+35+15x32+35x49=270+35+480+1715=(1715+35)+(270+480)=1750+750=1500
2.19.6 + 3.37.4 + 44.12
= 12 .19 + 12.37 + 44.12
= 12.(19+37+44)
= 12.100 = 1200
![](https://rs.olm.vn/images/avt/0.png?1311)
a)66.36+66.65-63
=66.(36+65-1)
=66.100
=6600
b)57.36+57.63+60
=57.(36+57)+60
=57.93+60
=5301+60
=5361
c)35.(48+50)+72
=35.98+72
=3430+72
=3502
d)15.66+30.17
=15.66+15.2.17
=15.66+15.34
=15.(66+34)
=15.100
=1500
e)45.56+15.32
=15.3.56+15.32
=15.168+15.32
=15.(168+32)
=15.200
=3000
nhớ **** cho mình nha
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{5\cdot8+10\cdot24+15\cdot32}{10\cdot16+20\cdot48+30\cdot64}\)
\(\frac{5\cdot8\left(1+2\cdot3+3\cdot4\right)}{10\cdot16\left(1+2\cdot3+3\cdot4\right)}\)
\(\frac{1}{4}\)
\(\frac{5.8+10.24+15.32}{10.16+20.48=30.64}\)
\(\frac{40+40.6+40.12}{160+160.6+160.12}\)
\(\frac{40.\left(1+6+12\right)}{160.\left(1+6+12\right)}\)
\(\frac{40}{140}=\frac{1}{4}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
Bài 1:
a) 16.(38-2)-38.(16-1)=16.38-32-38.16+38=-32+38=6
b) (-41).(-59+2)+59.(-41-2)=41.59-82-59.41-59.2=-82-118=-200
c) \(\left(-1\right)^{19}=-1\)
d) \(\left(-1\right)^{2002}=1\)
e) \(\left(-2\right)^5=-32\)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
18.15 + 35 + 15.32 + 35.49 = 15.(18+32) + 35.(1+49) = 15.50 + 35.50 = 50.(15+35) = 50.50 = 2500