Question

the expression x4 + ax2 + bx + 5 is exactly
divisible by x2 + 3x + 2, the value of a and b are:
3 9
A.
2' 2
9 3
. B.
2' 2
4 3
9 3
C.
D.
3 2
2 2
TY
32
4 A​

Answer 1

Answer:

If a=0, it becomes linear equation.

If b

2

−4ac=0, then there will be real and equal roots.

If b

2

−4ac<0, then the roots will be unreal.

Only if b

2

−4ac>0, we will get two real distinct roots.

Option D is correct