Question

If x=1/3 if he equation of x²-4kx-1=0 one variable then find the value of k

Answer 1

Answer:

k= -(2/3)

Step-by-step explanation:

put x=1/3 in equation

(1/3)^2-4*(1/3)*k-1=0

(1/9)-(4/3)k-1=0

-(4/3)k= 1-(1/9)

k= -(2/3)

Answer 2

hey mate here is the answer wish it helps...

(1/3)² - 4k * 1/3 -1 =0

1/9 -4k *1/3 -1 = 0

-4k*1/3 -1 = 9

-4k -1 = 9 × 3= 27

-4k = 27 +1

k = 28/-4

k=-7