Question

If one zero of quadratic polynomial x2-x-(2+2k) is -4, find the value of k ?

Answer 1

Answer:

Step-by-step explanation:

Answer 2

f(x)=x²−x−(2+2k)

one zero is −4

⇒ f(−4)=0

⇒ (−4)² −(−4)−(2+2k)=0

⇒ 16+4=2+2k

⇒ 18=2k

⇒ k=9