Question

Que. 8 Find the value of k for the following quadratic equation so that it has two real and equal
roots.
5r-2kr+20=0
​

Answer 1

Step-by-step explanation:

sum of roots = -2k/5 :

product of roots = 20/5=4

let x be the root . and the root are equal so.

X.X =4

x= +2 or -2

X+X= -2k/5

X =-k/5

when x=2

2=-k/5

i.e k = -10

when x= -2

-2=-k/5

i.e k = 10

Mark my ans ans Brainlist Answer