=3X4+2X2−10(2.0 ĐI M)Ể0.5B. P X( ) =M X( )−N X( ) =3X4−4X3...

Câu 3

       

=

3

x

4

+

2

x

2

10

(2.0 đi m)

0.5

b.

P x

( )

=

M x

( )

N x

( )

=

3

x

4

4

x

3

+

8

x

1.0

a.

g( ) 0

1

0

1

x

=

x

− =

x

=

7

7

V y 

1

x

=

7

 là nghi m c a đa th c 

g x

( )

0.5