tinh
a, 2^3+5^2+4^2-5^3
b,4^3.57+4^3.53-4^3.10
c, (2^6.15+2^6.86-2^6):64
d, (10^2-1):(10^2-2):(10^2:3) co 100 thua so
a, 2^3+5^2+4^2-5^3
b,4^3.57+4^3.53-4^3.10
c, (2^6.15+2^6.86-2^6):64
d, (10^2-1):(10^2-2):(10^2:3) co 100 thua so
lam nhanh nhe
minh se tick cho
mai minh phai nop roi
a = 8 + 25 + 16 - 125 sai đề
b = 43 .( 57 + 53 - 10)
= 43 . 100
= 64 . 100 = 6400
c = 26 . ( 15 + 86 - 6) : 64
= 64 . 95 :64
= 6080 : 64 = 95
= 2
a, 2^3+5^2+4^2-5^3
b,4^3.57+4^3.53-4^3.10
c, (2^6.15+2^6.86-2^6):64
d, (10^2-1):(10^2-2):(10^2:3) co 100 thua so
lam nhanh nhe
minh se tick cho
mai minh phai nop roi
Theo mik thì mấy câu nay chỉ cần bấm máy tính thôi mak
a: \(=8+16+25-125=-76\)
b: \(=4^3\left(57+53-10\right)=6400\)
c: \(=\dfrac{2^6\left(15+85-1\right)}{64}=100\)
a, 2^3+5^2+4^2-5^3
b,4^3.57+4^3.53-4^3.10
c, (2^6.15+2^6.86-2^6):64
d, (10^2-1):(10^2-2):(10^2:3) co 100 thua so
lam nhanh nhe
minh se tick cho
mai minh phai nop roi
1+(-2)+3+(-4)+5+(-6)+7+(-8)+9+(-10)+11+(-12)=
-1+2+(-3)+4+(-5)+6+(-7)+8+(-9)+10+(-11)+12=
(-1)+(-2)+(-3)+(-4)+.......+(-99)+(-100)=
(-1)+2+(-3)+4+.......+(-99)+100=
1+(-2)+3+(-4)+........+99+(-100)=
lam la co tick nha
1+(-2)+3+(-4)+5+(-6)+7+(-8)+9+(-10)+11+(-12)
=(1+3+5+7+9+11)+[(-2)+(-4)+(-6)+(-8)+(-10)+(-12)]
= 36+-42
=-6
(-1)+2+(-3)+4+(-5)+6+(-7)+8+(-9)+10+(-11)+12
=[(-1)+(-3)+(-5)+(-7)+(-9)+(-11)]+(2+4+6+8+10+12)
=(-36)+42
=6
a) 3/10 x x=2/5 b) 1/8 : x - = 1/2 d) 5/6 : 3/4 1: 2/3
a) 5/6 + 3/4 1 + 2/3
b) 5/6 - 3/4 1 - 2/3
c) 5/6 x 3/4 1x 2/3
3/10 x x=2/5
x = 2/5:3/10
x = 4/3
1/8 : x = 1/2
x = 1/8:1/2
x= 1/4
5/6 : 3/4 = 5/6x4/2= 10/9
1: 2/3= 1/1 x 3/2= 3/2
5/6 + 3/4 = 19/12
1 + 2/3= 1/1+2/3= 5/3
5/6 - 3/4 = 1/12
1 - 2/3= 1/1-2/3= 1/3
5/6 x 3/4= 5/8
1/1x2/3= 2/3
Rút gọn biểu thức :
\(\frac{5^2.6^{11}.16^2+6^2.12^6.15^2}{2.6^{12}.10^4-81^2.960^3}\)
\(\frac{\left(5^2.6^{11}.16^2+6^2.12^6.15^2\right).10}{2.6^{12}.10^4-81^2.960^3}\)
Giải ra bn nhé !
Viết số thích hợp vào chỗ chấm:
2 = … + 1 |
6 = … + 4 |
8 = 5 + … |
10 = … + 2 |
3 = … + 2 |
6 = 3 + … |
8 = … + 4 |
10 = 7 + … |
4 = 3 + … |
7 = 6 + … |
9 = 8 + … |
10 = … + 4 |
4 = … + 2 |
7 = 5 + … |
9 = 7 + … |
10 = 5 + … |
5 = 4 + … |
7 = … + 3 |
9 = 6 + … |
10 = 10 + … |
5 = … + 2 |
8 = 7 + … |
9 = …+ 4 |
10 = 0 + … |
6 = 5 + … |
8 = … + 2 |
10 = 9 + … |
1 = … + 1 |
Lời giải chi tiết:
2 = 1 + 1 |
6 = 2 + 4 |
8 = 5 + 3 |
10 = 8 + 2 |
3 = 1 + 2 |
6 = 3 + 3 |
8 = 4 + 4 |
10 = 7 + 3 |
4 = 3 + 1 |
7 = 6 + 1 |
9 = 8 + 1 |
10 = 6 + 4 |
4 = 2 + 2 |
7 = 5 + 2 |
9 = 7 + 2 |
10 = 5 + 5 |
5 = 4 + 1 |
7 = 4 + 3 |
9 = 6 + 3 |
10 = 10 + 0 |
5 = 3 + 2 |
8 = 7 + 1 |
9 = 5+ 4 |
10 = 0 + 10 |
6 = 5 + 1 |
8 = 6 + 2 |
10 = 9 + 1 |
1 = 0 + 1 |
2=1+1 6=2+4 8=5+3 10=8+2
3=1+2 6=3+3 8=4+4 10=7+3
4=3+1 7=6+1 9=8+1 10=6+4
4=2+2 7=5+2 9=7=2 10=5+5
5=4+1 7=4+3 9=6+3 10=10+0
5=3+2 8=7+1 9=5=4 10=0+10
6=5+1 8=6=2 10=9+1 1=0+1
cop hết mạng kìa
a) rút gọn: \(\dfrac{4^5x9^4-2x6^9}{2^{10}x3^8+6^8x20}\)
b) Cho A=\(\dfrac{1}{2}+\dfrac{2}{2^2}+\dfrac{3}{2^3}+\dfrac{4}{2^4}+\dfrac{5}{2^5}+...\dfrac{99}{2^{99}}+\dfrac{100}{2^{100}}\).So sánh A với 2
a: \(\dfrac{4^5\cdot9^4-2\cdot6^9}{2^{10}\cdot3^8+6^8\cdot20}\)
\(=\dfrac{2^{10}\cdot3^8-2\cdot2^9\cdot3^9}{2^{10}\cdot3^8+2^8\cdot3^8\cdot2^2\cdot5}\)
\(=\dfrac{2^{10}\cdot3^8-2^{10}\cdot3^9}{2^{10}\cdot3^8+2^{10}\cdot3^8\cdot5}\)
\(=\dfrac{2^{10}\cdot3^8\left(1-3\right)}{2^{10}\cdot3^8\left(1+5\right)}=\dfrac{-2}{6}=-\dfrac{1}{3}\)
A=(1^100+2^100+…+10^100).(5^10-25^5)
B=(2^5+3^5+4^5).(1^2+2^2+…+100^2).(4^10-2^20)