Q. 124.0( 5 Votes )

If x -3 is A. -2

B. 5

C. -5

D. 3

Answer :

Let, f(x) = x2 - ax - 15

Since, (x -3) is a factor of f (x), so


f (3) = 0


32 - a (3) -15 = 0


9 - 3a - 15 = 0


a = -2

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Champ Quiz | PolynomialsChamp Quiz | PolynomialsChamp Quiz | Polynomials29 mins
Genius Quiz |  Division of Algebraic ExpressionsGenius Quiz |  Division of Algebraic ExpressionsGenius Quiz | Division of Algebraic Expressions37 mins
Smart Revision | Polynomials IdentitiesSmart Revision | Polynomials IdentitiesSmart Revision | Polynomials Identities39 mins
Quiz | Division of PolynomialsQuiz | Division of PolynomialsQuiz | Division of Polynomials38 mins
Basic understanding of PolynomialsBasic understanding of PolynomialsBasic understanding of Polynomials37 mins
NCERT | Various Methods of FactorizationNCERT | Various Methods of FactorizationNCERT | Various Methods of Factorization39 mins
Factors & Remainder TheoremFactors & Remainder TheoremFactors & Remainder Theorem40 mins
NCERT | Master PolynomialsNCERT | Master PolynomialsNCERT | Master Polynomials51 mins
Quiz | Imp. Qs. on Algebraic IdentitiesQuiz | Imp. Qs. on Algebraic IdentitiesQuiz | Imp. Qs. on Algebraic Identities65 mins
Introduction to PolynomialsIntroduction to PolynomialsIntroduction to Polynomials37 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 :

Factorize:
</p
RS Aggarwal & V Aggarwal - Mathematics

Find the vaRS Aggarwal & V Aggarwal - Mathematics

Factorize:
</p
RS Aggarwal & V Aggarwal - Mathematics

Factorize:
</p
RS Aggarwal & V Aggarwal - Mathematics

Factorize:
</p
RS Aggarwal & V Aggarwal - Mathematics

If <span lang="ENNCERT Mathematics Exemplar

Show that p – 1 iNCERT Mathematics Exemplar

Factorize:
</p
RS Aggarwal & V Aggarwal - Mathematics

Find the value ofNCERT Mathematics Exemplar