![](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)
\(136.25+75.136-6^2.10^2\)
\(=136.\left(25+75\right)-36.100\)
\(=136.100-36.100\)
\(=100\left(136-36\right)=100^2=10000\)
![](https://rs.olm.vn/images/avt/0.png?1311)
A = 136 . 25 + 75 . 136 - 62 . 102 B = 90 - (22 . 25 - 32 . 7) C = 720 - {96 . [ (24 . 2 - 5) : 32 . 130] }
= 136 . (25 + 75) - 36 . 100 = 90 - (4 . 25 - 9 . 7)
= 136 . 100 - 36 . 100 = 90 - (100 - 63)
= (136 - 36) . 100 = 90 - 37
= 100 . 100 = 53
= 10000
D = 570 + {96 . [ (24 . 2 - 5) : 32 . 130] } E = 37 . 24 + 37 . 76 + 63 . 79 + 21 . 63
= 570 + {96 . [ (16 . 2 - 5) : 9 . 1] } = 37 . (24 + 76) + 63 . (79 + 21)
= 570 + [96 . (27 : 9) ] = 37 . 100 + 63 . 100
= 570 + (96 . 3) = (37 + 63) . 100
= 570 + 288 = 100 . 100
= 858 = 10000
![](https://rs.olm.vn/images/avt/0.png?1311)
\(a,\left(-37-17\right).\left(-9\right)+35.\left(-9-11\right)\)
\(=\left(-54\right).\left(-9\right)+35.\left(-20\right)\)
\(=486+\left(-700\right)\)
\(=-214\)
\(b,\left(-25\right).\left(75-25\right)-75.\left(45-25\right)\)
\(=\left(-25\right).50-75.20\)
\(=\left(-25\right).50+\left(-25\right).3.20\)
\(=\left(-25\right).50+\left(-25\right).60\)
\(=\left(-25\right).\left(50+60\right)\)
\(=\left(-25\right).110\)
\(=-2750\)
\(c,136.\left(-47\right)+36.47\)
\(=47.\left(-136+36\right)\)
\(=47.\left(-100\right)\)
\(=-4700\)
![](https://rs.olm.vn/images/avt/0.png?1311)
Bài 1 . Thực hiện phép tính :
a, ( 11 + 159 ) . 37 + ( 185 - 31 ) : 14
= 170 . 37 + 154 : 14
= 6290 + 11
= 6301
b, [ 25 . 103 + 7225 : 17 - ( 1500 - 125 ) : 5 ] . 32
= [ 25 . 103 + 7225 : 17 - 1375 : 5 ] . 32
= [ 2575 + 425 - 275 ] . 32
= 2725 . 32
= 87200
c, 136 . 25 + 75 . 136 - 62 . 102
= 136 . ( 25 + 75 ) - 36 . 100
= 136 . 100 - 36 . 100
= 100 . ( 136 - 36 )
= 100 . 100
= 10000
a, (11+159).37+(185-31):14 b,[25.103+7225:17-(1500-125):5].32 c, 136.25+75.136 - 62.102
=170.37+154:14 =[2575+425-1375:5].32 =136.(25+75)- (6.10)2
=6290+11 =[2575+425-275].32 =136.100 - 602
=6301 =2725.32 =13600 - 3600
= 87200 =10000
![](https://rs.olm.vn/images/avt/0.png?1311)
Câu 2:
Gọi hai só chẵn liên tiếp là 2k+2;2k+4
Theo đề, ta có: \(A=\left(2k+2\right)\left(2k+4\right)=4\left(k+1\right)\left(k+2\right)\)
Vì k+1 và k+2 là hai số lien tiếp
nên (k+1)(k+2) chia hết cho 2
=>A chia hết cho 8
![](https://rs.olm.vn/images/avt/0.png?1311)
a) \(A=125\left(-24\right)+24.225\)
\(=24\left[\left(-125\right)+225\right]\)
\(=24.100=2400\)
b) \(B=26\left(-125\right)-125\left(-36\right)\)
\(=125\left[\left(-26\right)-\left(-36\right)\right]\)
\(=125.10=1250\)
c) \(C=25\left(75-45\right)-75\left(45-25\right)\)
\(=25.75-25.45-75.45-75.25\)
\(=\left(25.75-75.25\right)-25.45-75.45\)
\(=-25.45-75.45\)
\(=45\left(-25-75\right)\)
\(=45\left(-100\right)=-4500\)
giai ho mik voi
260