Question

find the value of k in quadratic equation 9x²–kx+16=0 if roots are eual

Answer 1

Answer:

if the roots are equal the discriminant $b^{2} -4ac$ =0

a=9

b=-k

c=16

$k^{2} -4(16) (9)=0\\k^{2} =576\\k= + or - 24$

Step-by-step explanation: