Question

if the equation 9x^2+kx+1=0 has equal roots then k is a)6 b)-6 c)+-6 d)2​

Answer 1

Answer:

Step-by-step explanation:

Hay bro please use discriminant formulae here bcause if euation has equal zeroes then discriminant is equal to zero.

Discriminant=( b^2-4ac)

Hope this help

Answer 2

Answer:

The Given Equation is

ax2+bx+c=0

If the roots are equal then the discriminant is 0.

b2−4ac=0

⟹b24a=c

Hence the required relation is

c=b24a

Step-by-step explanation: