tim he so a cua da thuc P (x) = ax3 + 4x2 - 1 biet rang da thuc nay co mot nghiem la 2
tim nghiem cua da thuc h(x) = ( x-1 ) ( x+1)
Cho da thuc M ( x ) = \(x^2\) + 1. C/m M ( x ) khong co nghiem
M.n giup minh vs minh sap thi rui
nghiem cua da thuc N(x)= X^2 +x
P(x) = -3x2+4x-x3+x2+3x-1 Q(x)=3x4-x2+x3-2x-1-2x3 a) thu gon va sx giam dan b) M(x) =P(x)-Q(x) tim nghiem cua da thuc
chung minh da thuc khong co nghiem : x^2-2x+4
tim ngiem cua da thuc g(x)=x^3+4x
Tim nghiem :
a) A ( x ) = ( 6x + 3 ) - ( 2x + 1 )
b) B ( x ) = ( \(^{x^2}\) - 5x + 5 ) - ( 5x + 5 )
c) C ( x ) = \(^{x^2}\) - 8x
d) D ( x ) = \(x^2\) - 5x + 4
giup minh voi mai ninh nop roi.
cho da thuc x^2+x+1 vo nghiem