de f(x) chia het cho 3x - 1 thi f(1)=0
<=> 3.(1)^3 + 2.(1)^2 - 7.1 - a = 0
<=> 3 + 2 - 7 - a = 0
<=> -2 - a = 0
<=> a = -2
de f(x) chia het cho 3x - 1 thi f(1)=0
<=> 3.(1)^3 + 2.(1)^2 - 7.1 - a = 0
<=> 3 + 2 - 7 - a = 0
<=> -2 - a = 0
<=> a = -2
tim so ade da thuc x^3-x^2-7x+a chia het cho da thuc x-2
1. tinh gia tri cua bieu thuc P= x3 - 4y2 - 2015 x2 + 8xy + 64 tai x= 2015; y=2019
2. Chia da thuc P(x)= 2x3 -7x2 + 7x+ a
a) Chia da thuc P(x) cho da thuc x-2. Chia ro so du cua phep chia
b) Xac dinh giatri cua a de P(x) chia het cho x - 2.
bai 1 tim so a de da thuc x^3 - 3x^2+5x+a chia het cho da thuc x-2
tim a de da thuc x^4-3x^3-6x chia het cho x^2-3x-2
1) Phan tich da thuc sau thanh nhan tu: x2-x-2008.2009
2) Chung minh rang voi moi x,y,z ta luon co: x2+4y2+z2>=2x+12y+4z
3) Cho a-b=4. Tinh gia tri cua bieu thuc: a3-12ab-b3
cac ban lam duoc cau nao thi giup mik nha. mik dang can gap lam
a) Cho vidu ve 1 don thuc ,moi da thuc nhung k phai la don thuc 2 don thuc dong dang voi nhau,da thuc 1 bien
b) Hay viet 1 don thuc dong dang voi don thuc xy\(^3\) sao cho tai x=-1 y=2 gia tri cua don thuc do la so nguyen duong nho hon 10
CAC BAN GIUP MINH NHA MINH GAP LAM
Viet da thuc x^2+3x+2 duoi dang da thuc cua x-1
1. de da thuc 3x4+(2m-13)x3-4(7-m)x+3m-9 chia het cho x-1 thi m=?
2.cho A=-2x2+7x-6.A dat gia tri lon nhat tai x=?3.de da thuc x2-(m+1)x+4 nhận -1 la mot nhân tử thi m=?
3.choA=9x2+4y2+54x-36y-12xy+90. A dat gia tri nho nhat tai x=ay+b . khi do a+b= ?
1. de da thuc 3x4+(2m-13)x3-4(7-m)x+3m-9 chia het cho x-1 thi m=?
2.cho A=-2x2+7x-6.A dat gia tri lon nhat tai x=?3.de da thuc x2-(m+1)x+4 nhận -1 la mot nhân tử thi m=?
3.choA=9x2+4y2+54x-36y-12xy+90. A dat gia tri nho nhat tai x=ay+b . khi do a+b= ?