gia tri cua x biet x x4+x x6+x x8=2016

cho4 so ko am a,b;c;d thoa man a+b+c+d=1 . Goi S la tong cac tri tuyet doi cua hieu tung cap so co duoc tu 4 so nay. S co the dat gia tri lon nhat la bao nhieu ?

xin loi cac ban vi cau hoi cua minh ko co dau nen hoi kho hieu mong cac ban giup do nha thankyou

Cac ban giup minh voi minh can nop gap

Tim gia tri nho nhat cua bieu thuc:

P= / x-1/+/x-2017/+/x-2018/

* Dau gach cheo la dau gia tri tuyet doi nhe

trong mat phang lay 2016 diem nao do A1,A2,A3,...,A2016. nguoi ta to tat ca cac trung diem cua cac doan thang noi cac cap diem trong so 2016 diem nay. goi T la so cac diem duoc to do . Tim gia tri lon nhat , gia tri nho nhat cua T

Cac ban giup minh nhe

cho x ; y la cac so nguyen to sao cho gia tri tuyet doi cua x cong gia tri tuyet doi cua y bang 5 so cap so nguyen (x;y) thoa man la

tim cac gia tri nguyen cua x de gia tri bieu thuc y=2x^2+1/2x-1 la so nguyen

hai so duong x,y thoa man x.y=20 va x/4=y/5 co gia tri lan luot la 

cach lam nha cac ban

Tim cac gia tri nguyen cua x de cac gia tri bieu thuc sau la so nguyen

a, 9-2x/x-3

b,3x-5/x-2

c,-3/4-x

Cho biet x=-2 la nghiem cua da thuc P(x) = ax+b (a khac 0)

Tinh gia tri cua bieu thuc \(\frac{2011a+b}{3a-b}\)

Xin loi cac ban vi may minh bi hong nen khong viet dau duoc. Mong cac ban giup do minh nhe!