=39 

tính máy tính nha bạn chính xác 100 % 

\(\dfrac{5^2\cdot6\cdot\left(-16\right)^2+6^2\left(-12\right)^6\left(-15\right)^2}{2\left(-6\right)\cdot2\cdot10^4-81^2\cdot960^3}=\dfrac{3\cdot5^2\cdot2^9+2^{14}\cdot3^{10}\cdot5^2}{-2^7\cdot3\cdot5^4-2^{18}\cdot3^{11}\cdot5^3}=\dfrac{2^9\cdot3\cdot5^2\left(1+2^5\cdot3^9\right)}{-2^7\cdot3\cdot5^3\left(5+2^{11}\cdot3^{10}\right)}=-\dfrac{2^2\left(1+2^5\cdot3^9\right)}{5\left(5+2^{11}\cdot3^{10}\right)}\)

Đề tự chế???

\(\dfrac{5^2.6\left(-16\right)^2+6^2\left(-12\right)^6\left(-15^6\right)}{2\left(-6\right).2.10^4-81^2.960^3}=\dfrac{3.5^2.2^9+2^{18}.3^{11}.5^3}{-2^7.3.5^4-2^{18}.3^{11}.5^3}\)

=\(\dfrac{2^9.3.5^2\left(1+2^2.3^9\right)}{-2^7.3.5^3\left(5+2^{11}.3^{10}\right)}=\dfrac{2^2\left(1+2^5.3^9\right)}{-5\left(5+2^{11}.3^{10}\right)}\)

\(=\dfrac{4\left(1+1\right)}{-5\left(5+2^6.3\right)}=\dfrac{8}{-985}\)

ai làm nhanh mình tick cho

a.2.3/5:2.1/4+5/2

=2.3.4/5.2.1+5/2

=3.4/5+5.2

=12/5+5/2=24/10+25/10=49/10

b.16/6-2.1/6:1.1/7

=16/6-2/6.1/7

=16/6-2/42

=55/21

a)2×3/5÷2×1/4+5/2

=6/5÷1/2+5/2

=12/5+5/2

=49/10

b)16/6-2×1/6÷1×1/7

=8/3-1/3÷1/7

=8/3-7/3

=1/3

?????????????????

giải giùm e vs ạ