Question

If (x-3) is factor of k2x3-kx2+3kx-k find k

Answer 1

Answer:

bro is it the sign of multiplication or it is x?

Step-by-step explanation:

i don't understand

Answer 2

Answer:

thus k=-1/8

Step-by-step explanation:

let f(x)=k²x³-kx²+3kx-k

x-3 is a factor of f(x)

so x-3=0 and x=3

hence f(3)=0

f(3)=k²x³-kx²+3kx-k=0

k²(2)³-k(2)²+3k*2-k=0

8k²-4k+6k-k=0

8k²+k=0

k(8k+1)=0

k=0

or 8k+1=0

k=-1/8

If k=0 then f(x) =0 and it can not be divided by x-3

thus k=-1/8