Question

If 5 is a zero of the quadratic polynomial x^(2)-kx-15 then the value of k is- ​

Answer 1

Answer:

k=2

Step-by-step explanation:

here,

P(5)=0

=> 5^2-k×5-15=0

=> -5k = -25+15

=> k = -10/-5

=> k = 2