[(85-5):2 mũ 3 + 5 mũ 2]x2-40
85+(-35)+(-12)+(-35)
5 mũ 3 . 4 mũ 2 + 85. 5 mũ 3 - 5 mũ 7 : 5 mũ 4
85+(-35)+(-12)+(-35)=50+(-12)+(-35)=38+(-35)=3
53.42+85.53-57:54=125.16+85.125-53=125.16+85.125-125
=125.16+85.125-125.1=(16+85-1).125=100.125=12500
2 mũ 3 - 5 mũ 3 : 5 mũ 2 + 12 . 2 mũ 2
5 . [ { 85 - 35 : 7 } : 8 + 90 ] - 5 mũ 2 . 2
\(2^3-5^3:5^2+12\cdot2^2=8-5+48=51\\ 5\left[\left(85-35:7\right):8+90\right]-5\cdot2^2\\ =5\left(80:8+90\right)-20=5\cdot100-20=480\)
tìm x
x-4=26 (40+x)x2=180 (14+5x):2= 3 mũ 5 : 3 mũ 2
\(x-4=26\\ \Leftrightarrow x=30\)
\(\left(40+x\right).2=180\\ \Leftrightarrow40+x=90\\ \Leftrightarrow x=50\)
\(\left(14+5x\right):2=3^5:3^2\\ \Leftrightarrow\left(14+5x\right):2=27\\ \Leftrightarrow14+5x=54\\ \Leftrightarrow5x=40\\ \Leftrightarrow x=8\)
a) x-4=26
x=26+4= 30
b) (40+x)x2=180
40+x=180:2
40+x= 90
x=90-40=50
c) ( 14+5x):2=35: 32
14+5x:2=33=27
14+5x=27x2
14+5x=54
5x=54-14
5x=40
x=8
x-4=26 (40+x).2=180 (14+5.x):2=35:32
x=26+4 40+x= 90 (14+5.x):2=33
x=30 x=90-40 (14+5.x):2=27
x=50 (14+5.x)=27.2
14+5.x=54
5.x=54-14
5.x=40
x=40:5
x=8
tìm x
x-4=26 (40+x)x2=180 (14+5x):2= 3 mũ 5 : 3 mũ 2
vừa hãy thấy gửi rồi mà
Spam à:D?
a) x-4=26
x=26+4= 30
b) (40+x)x2=180
40+x=180:2
40+x= 90
x=90-40=50
c) ( 14+5x):2=35: 32
14+5x:2=33=27
14+5x=27x2
14+5x=54
5x=54-14
5x=40
x=8
Thực hiện phép tính a} 2 mũ 3 - 5 mũ 3 : 5 mũ 2 + 12.2 mũ 2 b} 5 . [ { 85 - 35 : 7 } : 8 + 90 ] - 5 mũ 2 . 2 c} 2 . [ { 7 - 3 mũ 3 : 3 mũ 2 } : 2 mũ 2 + 99 ] - 100 d} 2 mũ 7 : 2 mũ 2 + 5 mũ 4 : 5 mũ 3 . 2 mũ 4 - 3 . 2 mũ 5 e} { 3 mũ 5 . 3 mũ 7 } : 3 mũ 10 + 5 . 2 mũ 4 - 7 mũ 3 : 7
2 . [ { 7 -3 mũ 3 : 3 mũ 2 } : 2 mũ 2 + 99 ] - 100
b: \(5\cdot\left[\left(85-35:7\right):8+90\right]-5^2\cdot2\)
\(=5\cdot\left[\left(85-5\right):8+90\right]-25\cdot2\)
\(=5\cdot\left(10+90\right)-50\)
=450
2 mũ 2 . 85 + 40 . 2 mũ 2 - 2 mũ 3
\(2^2.85+40.2^2-2^3\)
\(=2^2.85+40.2^2-2^2.2\)
\(=2^2.\left(85+40-2\right)\)
\(=2^2.123\)
\(=492\)
\(2^{2}.85+40.2^{2}-2^{3}\)
\(=2^{2}.85+40.2^{2}-2^{2+1}\)
\(=2^{2}.85+40.2^{2}-2^{2}.2^{1}\)
\(=2^{2}.(85+40-2)\)
\(=4.123\)
\(=492\)
tìm x
x-4=26 (40+x)x2=180 (14+5x):2= 3 mũ 5 : 3 mũ 2
làm jum tui đi ;((
c)2 mũ 10 x 15 +2 mũ 10 x 85
d)5 mũ 12x 7-5 mũ 11x 10
e)24 mũ 4: 3 mũ 4 -32 mũ 12 :16 mũ 12
f)(5 mũ 3 + 5 mũ 4 +125 mũ 2 ):5 mũ 3
viết gọn kết quả phép sau dưới dạng lũy thừa
a] 12 mũ 2x 3 mũ 2 x2 mũ 3
b] 8 mũ 3 x 3 mũ 2x 6 mũ 3
c] 5 mũ 32 . 5 mũ 2
d] 100 mũ 6 x2 mũ 3
e] 100 mũ 2 chia 10 mũ 2 chia 5 mũ 2
f] 121 mũ 3 -11 mũ 2
a. \(12^2.3^2.2^3=2^4.3^2.3^2.2^3=2^7.3^4\)
b. \(8^3.3^2.6^3=2^9.3^2.2^3.3^3=2^{12}.3^5\)
c. \(5^{32}.5^2=5^{34}\)
d. \(100^6.2^3=\left(2^2.5^2\right)^6.2^3=2^8.5^8.2^3=2^{11}.5^8\)
e. \(100^2:10^2:5^2=\left(10.5.2\right)^2:10^2:5^2=2^2\)
f. \(121^3-11^2=11^6-11^2=11^2\left(11^4-1\right)\)