A)43.54*26*(30-315*2)
B)45*15+28
C)104*68-36*52
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
43/57 . 2/6 . ( 630 - 315 . 2 )
= 43/57 . 2/6 . ( 630 - 630 )
= 43/57 . 2/6 . 0
= 43/57 . 0
= 0
45 . 16 - 17
= 720 - 17
= 703
45 . 15 + 28
= 675 + 28
= 703
104 . 68 - 36 . 52 = 52 + 52 . 68 - 36 . 52
= 52 ( 1 + 68 - 36 )
= 52 . 33
= 85
45 . 15 + 28 = 675 + 28
= 703
45 . 16 - 17 = 720 - 17 = 703
a: \(61\cdot45+61\cdot23-68\cdot51\)
\(=61\left(45+23\right)-68\cdot51\)
\(=68\cdot61-68\cdot51\)
\(=68\left(61-51\right)=68\cdot10=680\)
b: \(3\cdot5^2-\left(75-4\cdot2^3\right)\)
\(=75-75+4\cdot8\)
\(=4\cdot8=32\)
c: \(36:\left\{2^2\cdot5-\left[30-\left(5-1\right)^2\right]\right\}\)
\(=\dfrac{36}{20-30+4^2}\)
\(=\dfrac{36}{-10+16}=\dfrac{36}{6}=6\)
d: \(\left(12\cdot49-3\cdot2^2\cdot7^2\right):\left(2020\cdot2021\right)\)
\(=\dfrac{\left(12\cdot49-12\cdot49\right)}{2020\cdot2021}=0\)
104.68-36.52
=104.68-18.2.52
=104.68-18.104
=(68-18)104
=50.2.52
=100.52=5200
104.68-36.52
=52.2.68-36.52
=52.136-36.52
=52.(136-36)
=52.100
=5200
a: \(2004^2-16=2000\cdot2008=4016000\)
b: \(892^2+892\cdot216+108^2=1000^2=1000000\)
c: \(36^2-52\cdot36+26^2=10^2=100\)