Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
(+27).(+5) = 135
(-27).(+5) = -135
(-27).(-5) = 135
(+5).(-27) = -135
\(27\times\left(-5\right)=-135.\)
Từ đó suy ra :
\(\left(+27\right)\times\left(+5\right)=+135.\)
\(\left(-27\right)\times\left(+5\right)=-135.\)
\(\left(-27\right)\times\left(-5\right)=+135.\)
\(\left(+5\right)\times\left(-27\right)=-135.\)
Ta có: 27.(-5)=(-135)
\(\Rightarrow\)+) (+27).(+5)=135
+) (-27).(+5)=(-135)
+) (-27).(-5)=135
+) (+5).(-27)=(-135)
P/s:Lần sau đăng thì đăng sớm 1 chút, đăng muộn k ai trả lời đâu
(+27).(+5)=135
(-27).(+5)=-135
(-27).(-5)=135
(+5).(-27)=-135
nhớ kb và tik cho mk nha
27(-5)=-135
(+27)(+5)=135
(-27)(+5)=-135
(-27)(-5)=135
(+5)(-27)=-135
\(\frac{2^{30}.5^7+2^{13}.5^{27}}{2^{27}.5^7+2^{10}.5^{27}}=\frac{2^{27}.2^3.5^7+2^{10}.2^3.5^{27}}{2^{27}.5^7+2^{10}.5^{27}}=2^3\)
\(\frac{\left(\frac{5}{8}+\frac{5}{27}-\frac{5}{49}\right)\cdot8\cdot27\cdot49}{\left(\frac{11}{8}+\frac{11}{27}-\frac{11}{49}\right)\cdot8\cdot27\cdot49}+\frac{6}{11}\)
\(=\frac{8+27-49}{8+27-49}+\frac{6}{11}\)
\(=1+\frac{6}{11}\)
\(=\frac{11}{11}+\frac{6}{11}=\frac{17}{11}\)
\(\frac{\frac{5}{8}+\frac{5}{27}-\frac{5}{49}}{\frac{11}{8}+\frac{11}{27}-\frac{11}{49}}+\frac{6}{11}\)
\(=\frac{5\left(\frac{1}{8}+\frac{1}{27}-\frac{1}{49}\right)}{11\left(\frac{1}{8}+\frac{1}{27}-\frac{1}{49}\right)}+\frac{6}{11}\)
\(=\frac{5}{11}+\frac{6}{11}=\frac{11}{11}=1\)
\(\frac{5}{8}+\frac{5}{27}-\frac{5}{49}\)
\(=5\left(\frac{1}{8}+\frac{1}{27}-\frac{1}{49}\right)\)
\(=\frac{1499}{10584}.5\)
\(=\frac{7495}{10584}\)
\(\frac{11}{8}+\frac{11}{27}-\frac{11}{49}\)
\(=11.\left(\frac{1}{8}+\frac{1}{27}-\frac{1}{49}\right)\)
\(=\frac{1499}{10584}.11\)
\(=1.557917611\)
Ta có 27. (–5) = –(27 . 5) = –135
Suy ra :
(+27) . (+5) = 135
(–27) . (+5) = –135
(–27) . (–5) = 135
(+5) . (–27) = –135