Question

If x= -1 is a zero of a quadratic polynomial, kx2 -5x – 4, then find the value of k​

Answer 1

Answer:

k = 1

Step-by-step explanation:

k(x)² - 5x - 4

2(-1)k – 5(–1) – 4

–2k + 6 – 4

–2k + 2

–2k = –2

k = 1

Answer 2

Answer:

p(-1) = k(-1)² - 5(-1) - 4 = 0

      = k + 5 - 4 = 0

      = k + 1 = 0

      = k = -1

Hope it helps you :p