Question

If alpha and beta zeros of polynomial f(x)=x²-5x+k such that Alpha=2 , find k?

Answer 1

Step-by-step explanation:

if alpha =2 then f(2)=0

2^2 -5×2 +k=0

4-10+k=0

k-6=0

k=6

Answer 2

Answer:6

Step-by-step explanation:

we know that alpaha + beeta----- -b/a

then 2+beeta---- -b/a

2+beeta------ -(5)/1

2+Beeta------ 5

beeta --------- 5-2

beeta----------- 3

And alpha*beeta---------c/a

Alpha------2 beeta-------3

2*3 --------k/1

6------------K

Value for k is 6