Question

[nguyen thi ngoc]

tinh

(-5 /3)*(3/10)^3

(9/4)^10/(3/2)^18

(gia tri tuyet doi -2/3)-12*(1/2-1/3)^2

Answer 1

[Uchiha Sasuke]

(-5/30*(3/10)^3 = (-5/3) * 27/1000 = -5*27/ 3*1000 =-9/200

(9/4)^10/(3/2)^18

=(3^2/2^2)/(3/2)^18

=(3/2)^20:(3/2)^18= 2,25 =9/4

câu còn lại như bạn ngo nguyen thanh cong

k mình nha thanks

có gì sai nhờ mấy bạn sửa dùm

Answer 2

[ngo nguyen thanh cong]

\(\left(-\frac{5}{3}\right)\cdot\left(\frac{3}{10}\right)^3=\left(-\frac{5}{3}\right)\cdot\frac{27}{1000}=\frac{-5\cdot27}{3\cdot1000}=\frac{-1\cdot9}{1\cdot200}=-\frac{9}{200}\)

\(\left(\frac{9}{4}\right)^{10}:\left(\frac{3}{2}\right)^{18}=332525673:147789188=2,25=2\frac{1}{4}\)

\(l-\frac{2}{3}l-12\cdot\left(\frac{1}{2}-\frac{1}{3}\right)^2=\frac{2}{3}-12\cdot\left(\frac{1}{6}\right)^2=\frac{2}{3}-12\cdot\frac{1}{36}=\frac{2}{3}-\left(12\cdot\frac{1}{36}\right)=\frac{2}{3}-\frac{1}{3}=\frac{1}{3}\)