Các câu hỏi tương tự
Voi x>=-2.Tim GTNN cua bieu thuc N=x^2+2x+1/(x+2)
Cho bieu thuc: \(p=\left(\frac{1}{\sqrt{x}-\sqrt{x-1}}-\frac{x-3}{\sqrt{x-1}-\sqrt{2}}\right)\left(\frac{2}{\sqrt{2}-\sqrt{x}}-\frac{\sqrt{x}+\sqrt{2}}{\sqrt{2x}-x}\right)\)
a) Tim DKXD cua bieu thuc p
b) Rut gon bieu thuc p
tim gia tri lon nhat hoac be nhat cua bieu thuc
A=\(2x-2\sqrt{x}+1\)
B=\(-x+2\sqrt{x-1}+1\)
Tim gia tri lon nhat va gia tri nho nhat cua bieu thuc sau: A=\(\frac{x+1}{x^2+x+1}\)
giup minh vs......
1.Tim tat ca cac so nguyen n ( lnl <1000) sao cho can(3n^2 +789) la mot scphuong chia het cho 3.
2. Biet rang x la mot so thuc khac 0, tim gtnn cua bieu thuc: Q = ( 2011,2012x^2 -2x +2013,2014)/(2014,2015x^2)
Cho pt 2x^2 +2mx +m^2-2
a. Tim m de pt co ngo
b. Tim GTLN cua bieu thuc C=|2x1x2+x1+x2-4|
Cho 2 so thuc a va b thoa màn a>b va ab=4. Tim GTNN cua bieu thuc P=(a2+b2+ 1):(a-b)
gia tri lon nhat cua bieu thuc P=can bac hai cua (3+2x-x^2)
Tim gia tri nho nhat va lon nhat cua bieu thuc sau: \(p=\frac{4x+3}{x^2+1}\)