If one root of the equation x^2+px+12=0 ...

If one root of the equation `x^2+px+12=0` is 4, while the equation `x^2+px+q=0` has equal roots, then the value of q is:

A

`39/4`

B

`49/4`

C

12

D

none of these

Verified by Experts

|

COMPLEX NUMBERS AND QUADRATIC EQUATIONS
JBD PUBLICATION|Exercise EXAMPLE|36 Videos
BINOMIAL THEOREM
JBD PUBLICATION|Exercise EXAMPLE|23 Videos
CONIC SECTIONS
JBD PUBLICATION|Exercise EXAMPLE|35 Videos

Similar Questions

Explore conceptually related problems

The roots of the equation 12 x^2 + x - 1 = 0 is :

4 x^2-2 x+a=0, has one roots then find the value of a ?

If one root of the equation x^(2)-lamdax+12=0 is even prime while x^(2)+lamdax+mu=0 has equal roots, then mu is

If one root of the equation x^2+px+q=0 is 2+sqrt3 , then values of p and q is:

Let alpha,beta be the roots of the equation x^2-p x+r=0a n dalpha//2,2beta be the roots of the equation x^2-q x+r=0. Then the value of r is

The roots of the equation x^(2)-2sqrt(3)x+3=0 are

If alpha and beta are the roots of the quadratic equation x^2+4x+3=0 , then the equation whose roots are 2 alpha+ beta are alpha+2 beta is :

If alpha and beta are the roots of the equation x^2+x+1=0 , then alpha^2+beta^2 is equal to:

If 2 - i is a root of the equation ax^2+ 12x + b=0 (where a and b are real), then the value of ab is equal to :

One root of the quadratic equation x^(2)-12x+a=0 is thrice the other. Find the value of a?