tim gtnh cua
Q = 2x ^2 -6x
6.tim gia tri nho nhat cua bieu thuc.
D=2x^2-6x
tim min cua bieu thuc sau :
2x-3 \ 3x+1
Cho 2 da thuc A= 2x^3 + x^2 - 4x +x^3 + 3 ; B= 6x + 3x^3 -2x + x^2 - 5
a, Tinh tong hai da thuc A+B
b, Tinh hieu hai da thuc A-B
c, tim nghiem cua da thuc hieu A - B vua tim duoc o y b.
tim max hoac min cua x^2-2*x+y^2-4*y+16
tim nghiem cua cac da thuc
a,x^2+x
b,x^2+2x+1
c,2x^2+3x-5
d,x^2-4x+3
e,x^2+6x+5
f,3x(12x-4)-9x(4x-3)=30
g,2x(x-1)+x(5-2x)=15
Cho da thuc p(x)= 6x^2-5x-1
q(x)= -2x^4+4x^3-3x^2+x
Tim nghiem Chung cua 2 da thuc
cho x,y thoa man: x^2+y^2= x+y .tim MIN ,MAX cua B=x-y
tim gtnn cua A=x^2-6x+|y-3|+7