Q. 24.4( 8 Votes )

The value of k for which the polynomial x3 - 4x2 + 2x + k has 3 as its zero, is
A. 3

B. -3

C. 6

D. -6

Answer :

If 3 is the solution for the equation. It must satisfy the expression.

So, putting x = 3 it must be zero.


33 - 4 × 32 + 2 × 3 + k = 0


27 – 4 × 9 + 6 + k = 0


k - 3 = 0


k = 3

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
RD Sharma | Polynomials - IRD Sharma | Polynomials - IRD Sharma | Polynomials - I43 mins
NCERT | Triangles-INCERT | Triangles-INCERT | Triangles-I48 mins
NCERT | Discussion on Important QuestionsNCERT | Discussion on Important QuestionsNCERT | Discussion on Important Questions52 mins
NCERT | Natural Resources - INCERT | Natural Resources - INCERT | Natural Resources - I50 mins
Know Calculation Hacks IKnow Calculation Hacks IKnow Calculation Hacks I46 mins
Foundation | Laws Governing Gases - IFoundation | Laws Governing Gases - IFoundation | Laws Governing Gases - I45 mins
NCERT I Quiz on Lines and AnglesNCERT I Quiz on Lines and AnglesNCERT I Quiz on Lines and Angles52 mins
Foundation I Solving Coordinate Geometry QuestionsFoundation I Solving Coordinate Geometry QuestionsFoundation I Solving Coordinate Geometry Questions50 mins
NCERT I Questions on Angle Sum Property of TriangleNCERT I Questions on Angle Sum Property of TriangleNCERT I Questions on Angle Sum Property of Triangle51 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

The zeroes of the polynomial p (x) = x2 + x - 6 are

RS Aggarwal & V Aggarwal - Mathematics

Zero of the polynomial p(x) = 2x + 3 is

RS Aggarwal & V Aggarwal - Mathematics

If find

(i) f (0)


(ii) f (4)


(iii) f (-5)

RS Aggarwal & V Aggarwal - Mathematics

If (x + 1) is a factor of 2x2+ kx, then k =?

RS Aggarwal & V Aggarwal - Mathematics

If (x2+ kx – 3) = (x – 3 ) (x + 1) then k =?

RS Aggarwal & V Aggarwal - Mathematics

The zeroes of the polynomial p (x) = x2 – 3x are

RS Aggarwal & V Aggarwal - Mathematics

The zeroes of the polynomial p (x) = 3x2 – 1 are

RS Aggarwal & V Aggarwal - Mathematics

If p(x) = (x4 – x2 + x), then

RS Aggarwal & V Aggarwal - Mathematics