MCQ
If x + 1 is a factor of the polynomial 2x2 + kx, then k =
- A4
- B3
- C2
- D-2
✓
Answer
- 2
Solution:
If p(x) = x + 1 is a factor of 2x2 + kx, then p(-1) = 0
⇒ 2(-1)2 + k(-1) = 0
⇒ 2 - k = 0
⇒ k = 2
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
In the following, write the correct answer.
In $\triangle\text{ABC}$ and $\triangle\text{DEF},$ if AB = AC, $\angle\text{A}=\angle\text{D}.$ The two triangles are:
→→In $\triangle\text{ABC}$ and $\triangle\text{DEF},$ if AB = AC, $\angle\text{A}=\angle\text{D}.$ The two triangles are:
In Fig. if BP ||CQ and AC = BC then the measure of x is
A diagonal of a rectangle is inclined to one side of the rectangle at $25^{\circ}$. The acute angle between the diagonals is
→Find the measure of each exterior angle of an equilateral triangle.
The perpendicular distance of the point $(-7,4)$ from $y$-axis is
→The value of $\Big[(81)^{\frac{1}{2}}\Big]^{\frac{1}{2}}$ is:
→In Fig , $P Q R S$ is a parallelogram. Can it be concluded that $\triangle R P S \cong \triangle Q S P$ ? Why or why not?
→If $\text{x}^4+\frac{1}{\text{x}^4}=623,$ than $\text{x}+\frac{1}{\text{x}}=$
→Let C be the mid-point of an arc AB of a circle such that m AB^ = 183º. If the region bounded by the arc ACB and line segment AB is denoted by S, then the centre O of the circle lies.