Question

Find the value of k if y=5 is a root of the quadratic equation ky ^2 -9y-5=0​

Answer 1

Answer:

ky²-9y-5=0

y=5

then k*5²-9*5-5=0

k*25-45-5=0

25k-50=0

25k=50

k=50/25

2

k=2....