Question

if 8 is one root of x^2_kx_40=0 , find the value of k and write the full equation

Answer 1

Answer: 3

Step-by-step explanation:

Here as 8 is tge root of the equation,

x=8 satisfies the equation.

Now, putting the value of x, the equation becomes =>

8^2-8k-40=0

Solving this equation,

64-8k=40

8k=64-40

8k=24

Therefore, k=3

Hope it helps you!!!