• 072920 77839
  • info@smartachievers.in
Menu
Back
  • JEE ADVANCE
  • JEE MAIN
  • NEET
  • BITSAT
  • CBSE BOARD
  • UP BOARD
  • CUET
JEE ADVANCE
  • CLASS XI - XII
  • CRASH COURSE
CRASH COURSE
JEE MAIN
  • CLASS XI - XII
  • CRASH COURSE
CRASH COURSE
NEET
  • CLASS XI - XII
  • CRASH COURSE
BITSAT
  • CLASS XI - XII
CBSE BOARD
  • CLASS IX
  • CLASS X
  • CLASS XI
  • CLASS XII
  • CLASS VI
  • CLASS VII
  • CLASS VIII
UP BOARD
  • CLASS IX
  • CLASS X
  • CLASS XI
  • CLASS XII
CUET
  • CRASH COURSE
Courses


Solution


Q.

The number of quadratic polynomials having zeros –5 and –3 is:
1 1  
2 2  
3 3  
4 more than 3  

Ans.

(4)

Given: zeros of the polynomial are –5 and –3.

Polynomials having zeros –5 and –3 are given by p(x) = k(x + 5)(x + 3).

⇒ p(x) = k(x² + 8x + 15), where k is any real constant.

∴ k can have infinitely many values. So, number of possible polynomials is infinitely many.