\(A=\dfrac{2^{20}\cdot3^{10}+2^9\cdot2^{12}\cdot3^9}{2^{18}\cdot5\cdot3\cdot3^8-2^{19}\cdot3^9}\)

\(=\dfrac{2^{20}\cdot3^9\left(3+2\right)}{2^{18}\cdot3^9\left(5-2\right)}=4\cdot\dfrac{5}{3}=\dfrac{20}{3}\)

Các bạn giúp mk với tối nay nộp rùi 

Bạn đăng lên H.vn thử xem . Trên đấy có nhiều người trả lời giúp hơn đấy mà còn nhanh hơn nữa. 

`\(=\frac{5.5.4^{15}.9^9-2^9.6^{18}.6^2}{5.3.4^{12}.2.9^9.3-2^9.2^2.6^{18}.11}\)

\(=\frac{5.4^3-6^2}{3.2.3-2^2.11}\)

\(=\frac{320-36}{18-44}\)

\(=\frac{-284}{26}=\frac{-142}{13}\)

Gấp lắm ạ

a)

204 - 84:12 = 204 - 7 = 197

b)

15.2³ + 4.3² - 5.7 = 15.8 + 4.9 – 5.7 = 120 + 36 - 35 = 121

c) Áp dụng:

a^m . aⁿ = a^m+n

a^m : aⁿ = a^m-n

5⁶:5³ + 2³.2² = 5³ + 2⁵ = 125 + 32 = 157

d)

164.53 + 47.164 = 164(53 + 47) = 164.100 = 16400

a) 204 - 84 : 12

= 204 - 7 = 197

b) 15.2³ + 4.3² - 5.7

= 15.8 + 4.9 - 35

= 120 + 36 - 35

= 156 - 35

= 121

c) 5⁶ : 5³ + 2³.2²

= 5^{6 - 3} + 2^{3 + 2}

= 5³ + 2⁵

= 125 + 32

= 157

d) 164.53 + 47.164

= 164.( 53 + 47 )

= 164.100

= 16400

\(P=\dfrac{2^{20}\cdot3^{10}+2^9\cdot2^{12}\cdot3^9}{15\cdot2^{18}\cdot3^8-2^{19}\cdot3^9}=\dfrac{2^{20}\cdot3^9\left(3+2\right)}{2^{18}\cdot3^9\cdot5-2^{19}\cdot3^9}\)

\(=\dfrac{2^{20}\cdot3^9\cdot5}{2^{18}\cdot3^9\left(5-2\right)}=4\cdot\dfrac{5}{3}=\dfrac{20}{3}\)

\(2^2.6-18:3^2+15.2\)

\(=4.6-18:9+15.2\)

\(=24-2+30\)

\(=52\)

2².6-18:3²+15.2=

=4.6-18:9+30

=24-2+30

=22+30

=52

Chúc bn hc tốt

a: \(5^6:5^3+2^3:2^2\)

\(=5^3+2\)

=125+2

=127

b: \(3333:3+225:15\)

=1111+15

=1126

c: \(15\cdot2^3+4\cdot3^2-5\cdot7\)

\(=15\cdot8+4\cdot9-35\)

=120+36-35

=121

d: \(5\cdot4^2-18:3^2\)

\(=5\cdot16-18:9\)

=80-2=78

e: \(6^2:4\cdot3+2\cdot5^2\)

\(=36:4\cdot3+2\cdot25\)

=27+50

=77

f: \(80-\left(4\cdot5^2-3\cdot2^3\right)\)

=80-(100-24)

=80-76

=4

204-84:2=204-42=162

15.2³+4.3²-5.7=15.8+4.9-35=120+36-35=121

5⁶:5³+2³.2²=15625:125+8.4=125+32=157

164.53+47.164=164.(53+47)=164.100=16400

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