\(\dfrac{10^3+2.5^3+5^3}{55}\)
\(\dfrac{10^3+2.5^3+5^3}{55}\)
giúp với ạ
\(=\dfrac{5^3\cdot2^3+2\cdot5^3+5^3}{55}=\dfrac{5^3\left(2^3+2+1\right)}{55}=5^2=25\)
\(\dfrac{10^3+2.5^3+5^3}{55}\)
\(=\dfrac{1000+127+125}{55}=\dfrac{1252}{55}\)
\(\dfrac{10^3+2.5^3+5^3}{55}-\dfrac{4^6.9^5+6^9.120}{8^4.3^{12}-6^{11}}\)
\(=\dfrac{5^3\left(2^3+2+1\right)}{55}-\dfrac{2^{12}\cdot3^{10}+2^{12}\cdot3^{10}\cdot5}{2^{12}\cdot3^{12}-2^{11}\cdot3^{11}}\)
\(=5^2-\dfrac{2^{12}\cdot3^{10}\cdot\left(1+5\right)}{2^{11}\cdot3^{11}\left(2\cdot3-1\right)}=25-\dfrac{2}{3}\cdot\dfrac{6}{5}\)
=25-4/5
=24,2
tính:
\(b.\dfrac{10^3+2.5^3+5^3}{55}\)
helpppp me! mk sắp phải nọp rùi huhu
Ta có:
\(\frac{10^{3^{ }}+2.5^3+5^3}{55}=\frac{5^3\left(2^3+2+1\right)}{55}=\frac{5^3.11}{55}=25\)
thực hiện phép tính: 10^3+2.5^3+5^3/55
theo máy tính kết quả là: \(\frac{13775}{11}\)
Thực hiện phép tính: 10^3+2.5^3+5^3/55
10\(^3\) + 2. 5\(^3\) + \(\frac{5^3}{55}\)
= 1000 + 2. 125 + \(\frac{125}{55}\)
= 1000 + 250 + \(\frac{25}{11}\)
= 1250 + \(\frac{25}{11}\)
= 1250\(\frac{25}{11}\) =\(\frac{\text{ 89575}}{88}\)
\(10^3+2.5^3+5^3:55\)
103+2.53+53:55
= 1000+2.125+125:55
= 1000+250+25/11
= \(1252\frac{3}{11}\)
\(\frac{10^3+2.5^3+5^3}{55}\)
\(\frac{10^3+2.5^3+5^3}{55}\)