Ta có:
1,(5)=1+0,(5)=1+0,(1).5=1+\(\frac{1}{9}.5=1+\frac{5}{9}=\frac{14}{9}\)
Ta có:
1,(5)=1+0,(5)=1+0,(1).5=1+\(\frac{1}{9}.5=1+\frac{5}{9}=\frac{14}{9}\)
cho x y la hai so nguyen duong khac nhau thoa man \(2x^2+x=3y^2+y\)
chung minh\(\frac{x-y}{2x+2y+1}\)la phan so toi gian
1. Cho a,b,c,d la cac so nguyen thoa man \(a^2=b^2+c^2+d^2\)
chung minh rang a.b.c.d + 2015 viet duoc duoi dang hieu cua 2 so chinh phuong.
2. Cho a,b la cac so duong thoa man dieu kien a+b=1. tim gia tri nho nhat cua bieu thuc
\(P=\frac{2+a}{\sqrt{2-a}}+\frac{2+b}{\sqrt{2-b}}\)
Ai hoc lop 5 thi moi tra loi duoc cau nay : Do la bai Tieng Viet Tap 2 bai : Cong viec dau tien .
Cau 1 : Cau nao duoi day la cau ghep ?
a) Mot hom , anh Ba Chan goi toi vao trong buong dung noi anh giao viec cho toi ngay truoc .
b) Nhan cong viec toi vinh du dau tien nay , toi thay long cu bon chon , thap thom .
c) Toi rao buoc va truyen don dan dan roi xuong dat .
d) May ten linh ma ta hot hai xach sung chay ram ram .
Cau 2 :Tu " Viec " trong cau : " Em chi muon lam that cho Cach Mang " la :
a) Dong tu
b) Tinh tu
c) Dai tu
d) danh tu
Cau 3 : Dong vai chi Ut ke khoang 3 - 5 cau ve tam trang khi di rai chuyen
chung minh 99999+11111*căn3 khong viet duoc duoi dang (a+b*căn3)^2
neu tu so cua mot phan so toi gian be hon mot duoc nang len lap phuong con mau so cua no duoc tang len ba don vi thi phan so da cho tang len gap ba lan.Tim phan so da cho
so thap phan lon nhat viet bang 4 so le khac nhau la
o 2 ban la hai cai cay o giua co treo 1 cai vong co 1 ong cu dang nam o duoi co 1 cai gieng hoi ong cu bi j
viet 3 phan so nam giua hai phan so 3/4 va 3/5
cai gi o phia truoc bn ma ko nhin thay dc
tren nhap duoi giat la dang lam gi
trong 1 be ca co 1o con biet co 4 con bi chet, 3 con boi di cho khac hoi trong be ca co may con ca