Question

help me please............​

Answer 1

Answer:

Step-by-step explanation:

4 P (x)=-ax^3-x^2+x+4

P (-1)=-a (-1)^3-(-1)^2+(-1)+4

=-a×-1-1-1+4

=a-2+4

=a+2

P (x)=0

a+2=0

a=-2

5. P (x)=27x^3-ax^2-x+3

P (-1/3)=27 ×(-1/3)^3-a×(-1/3)^2-(-1/3)+3

=27×-1/27-a×1/9+1/3+3

=-1-a/9+10/9

=(-9-a+10)/9

=1-a/9

P (x)=0

(1-a)/9=0

1-a=0

a=1