Các câu hỏi tương tự
Tim GTNN cua:(x2+x+1)^2
cho x>0,y>0, x+y=2012.
a, tim GTLN cua A= (2x^2+8xy+2y^2)/ (x^2+2xy+y^2)
b, tim GTNN cua B=(1+(2012/x))^2+(1+(2012/y))^2
cho x,y>0 x+y=1
tim gtnn cua M= (1-1/x2)(1-1/y2)
cho x,y thuoc R khac 0 thoa man 2x^2 + y^2/4 +1/x^2 = 4. tim gtnn gtln cua A= 2008+xy
tim gtnn cua a= (x-2) nhan (x+1)
tim GTNN cua bt sau
A=(x-1)(x+2)(x+3)(x+6)
tim gtnn cua x(x+1)(x+2)(x+3)
cho x y z >0 va x+y+z=1. tim gtnn cua a=(x3+y3+z3)/(x2+y2+z2)
Tim GTNN cua P=x^2/(x-1) (x>1)