Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
a)
\(\frac{864\cdot48-432\cdot96}{864\cdot48\cdot432}=\frac{432\cdot2\cdot48-432\cdot96}{864\cdot48\cdot432}=\frac{432\cdot96-432\cdot96}{864\cdot48\cdot432}=\frac{0}{864\cdot48\cdot432}=0\)
Làm từng phần một nha =))
b)
\(\frac{16\cdot17-5}{16\cdot16+11}=\frac{16\cdot\left(16+1\right)-5}{16\cdot16+11}=\frac{16^2+16-5}{16^2+11}=\frac{16^2+11}{16^2+11}=1\)
@_@
Cau co dau cham: Vu Phuong Anh la ban than cua em.
Cau co dau phay: Mot ngay, hia ngay, ba ngay ... ngo cai da mot tuan troi qua ke tu ngay thi cuoi hoc ki ket thuc.
Cau co dau cham phay:
Cau co dau hoi cham: Da 10 gio toi troi qua, vay ma anh den le loi o cua phong me van bat. Nam im trong chiec chan am ap, toi to mao khong biet ma dang lam j ma thuc khuya the?
Cau co dau cham than: Oi chao trong cau that ruc ro giua buoi tiec trong chiec vay dai thuot tha!
Cau co dau hai cham: Muoi nam xa cach mai truong cu, toi bong bong moi vat luot qua truoc mat toi nhu mot cuon phim tua cham: Chiec ban hoc than yeu; cai ghe toi hay ngoi; nu cuoi am ap cua co BInh, tieng hat trong nhu suoi cua Linh va doi mat cuoi hip mi tinh nghich cua Hang - nguoi ban than thoi tho au cua toi;...
Cau co dau da cham:____nhu tren_____________________________________________________________________________
Cau co dau gach ngang; ________nhu ten_______________________________________________________________________
Cau co dau ngoac don: De Choat khong chi gay go yeu duoi, ma tinh net con an xoi o thu ( that vi chi om dau luon, khong lam duoc j nen hon), co mot cai hang o cug chi boi nong sat mat dat, khong biet dao sau roi khoet ra nhieu ngach.
Cau co dau ngoac kep: Sau khi treu chi Coc, toi chui tot vao hang, chan vat chu ngu bang nghi thu vi:'' May tuc thi may cu tuc, my ghe vo dau ra cho nho di, nho den dau thi may cung khong chui noi vao to tao dau!".
Chuc ban hoc that tot nho k cho mk day nhe dung co quen!
Ta có :
\(\frac{33}{98}=\frac{33.25}{98.25}=\frac{825}{2450}\)
\(\frac{16}{50}=\frac{16.49}{50.49}=\frac{784}{2450}\)
Vì \(825>784\)nên \(\frac{825}{2450}>\frac{784}{2450}\)hay \(\frac{33}{98}>\frac{16}{50}\)
~ Hok tốt ~
a,/x/=10\(\Rightarrow\hept{\begin{cases}x=-10\\x=10\end{cases}}\)
b,/x/=7\(\Rightarrow\hept{\begin{cases}x=-7\\x=7\end{cases}}\)
\(\frac{5a+7b}{6a+5b}=\frac{29}{28}\)
\(\Leftrightarrow28\left(5a+7b\right)=29\left(6a+5b\right)\)
\(\Leftrightarrow140a+196b=174a+145b\)
\(\Leftrightarrow34a=51b\)
\(\Leftrightarrow\frac{a}{b}=\frac{51}{34}\)
\(\Leftrightarrow\hept{\begin{cases}a=51\\b=34\end{cases}}\)
Đặt \(A=\frac{3^2\cdot4^2\cdot2^{32}}{11\cdot2^{13}\cdot4^{11}-16^9}\)
\(A=\frac{3^2\cdot\left(2^2\right)^2\cdot2^{32}}{11\cdot2^{13}\cdot\left(2^2\right)^{11}-16^9}\)
\(A=\frac{3^2\cdot2^4\cdot2^{32}}{11\cdot2^{13}\cdot2^{22}-16^9}=\frac{3^2\cdot2^{36}}{11\cdot2^{35}-\left(2^4\right)^9}\)
\(A=\frac{3^2\cdot2^{36}}{11\cdot2^{35}-2^{36}}\)
\(A=\frac{3^2\cdot2^{36}}{11\cdot2^{35}-2\cdot2^{35}}\)
\(A=\frac{3^2\cdot2^{36}}{\left(11-2\right)\cdot2^{35}}=\frac{9\cdot2^{36}}{9\cdot2^{35}}=\frac{2^{36}}{2^{35}}=2\)
Bài làm:
\(\frac{3^2.4^2.2^{32}}{11.2^{13}.4^{11}-16^9}\)
\(=\frac{3^2.\left(2^2\right)^2.2^{32}}{11.2^{13}.\left(2^2\right)^{11}-\left(2^4\right)^9}\)
\(=\frac{3^2.2^4.2^{32}}{11.2^{13}.2^{22}-2^{36}}\)
\(=\frac{3^2.2^{36}}{11.2^{35}-2^{36}}\)
\(=\frac{3^2.2^{36}}{\left(11-2\right).2^{35}}\)
\(=\frac{9.2^{36}}{9.2^{35}}\)
\(=2\)
Học tốt