Question

Q17 please help fast.. will like brainliest answer and no spam

Answer 1

Answer:

Divide p(x)by g(x) and put r(x)=0

Step-by-step explanation:

As it is given that p(x) has to be divided completely by g(x) so r(x) will equal to 0

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Answer 2

p(x)=x^4+x^3+8x^2+ax-b

Since x^2+1 is a factor of p(x) ,x=+1 & -1

So p(1) & p(-1)=0

p(1)=1^4+1^3+8(1)^2+a(1)-b=0

1+1+8+a-b=0

10+a-b=0 ........(i)

p(-1)=(-1)^4+(-1)^3+8(-1)^2+a(-1)-b=0

1-1+8-a-b=0

8-a-b=0..........(ii)

add( i ) and( ii)

10+a-b+8-a-b=0

18-2b=0

b=9

put value of b in (ii)

8-a-9=0

-a-1=0

a=-1