Question

if 8 a root of the equation x2 - 10x + k then the value of k

Answer 1

Hi ☺☺

Your Answer...

Let, p(x) = x²-10x+k

since, 8 is the root of p(x)

•°• p(8) = 0

8²-10(8)+k = 0

64-80+k = 0

-16+k = 0

=> k = 16 .

☺☺

Answer 2

8^2-80+k=0
k=80-64
k=16