Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
a) A= (\(2^9.3+2^9.5\)) : \(2^{12}\)
= \(2^9\)(3+5) : \(2^{12}\)
= \(2^9.8:2^{12}\)
= \(2^9.2^3:2^{12}\)
= \(2^{12}:2^{12}\)
=1
200-{30-(4-1)2
=200-{30-9}
=179
12:{390:[500-(125+35*7)]}
=12: {390 : [500- 245]}
=12 : {390 : 255}
=12 : 1,52941176471
= 7.84615384613
12000-(1500*2 + 1800 * 3+1800*2:3)
=12000-(3000+5400+3600:3)
= 12000-9600
=2400
600: { 450:[450-(4*53 - 23 *52)]}
= 600:{ 450:[450-(4*125-8*25)]}
=600:{450:[450-300]}
=600: { 450: 150}
=600 : 3
= 200
\(600:\left\{450:\left[450-\left(4.5^3-2^3.5^2\right)\right]\right\}\)
\(=600:\left\{450:\left[450-\left(4.125-8.25\right)\right]\right\}\)
\(=600:\left\{450:\left[450-\left(500-200\right)\right]\right\}\)
\(=600:\left\{450:\left[450-300\right]\right\}\)
\(=600:\left\{450:150\right\}\)
\(=600:3\)
\(=200\)
B = 600 : { 450 : [450 - ( 4 . 53 - 23 . 52 ) ] }
B = 600 : { 450 : [ 450 - ( 4 . 125 - 8 . 25 ) ] }
B = 600 : { 450 : [ 450 - ( 500 - 200 ) ] }
B = 600 : { 450 : [ 450 - 300 ] }
B = 600 : { 450 : 150 }
B = 600 : 3
B = 200
\(B=600:\left\{450:\left[450-\left(4.5^3-2^3.5^2\right)\right]\right\}\)
\(B=600:\left\{450:\left[450-300\right]\right\}\)
\(B=600:\left(450:150\right)\)
\(B=600:3\)
\(B=200\)