Question

If X + 3 is a factor of x square - 7 x + k then the value of k is

Answer 1

Answer:

-30

Step-by-step explanation:

x + 3 = 0

∴ x = -3

p(x) = $x^{2}$ - 7x + k

p(-3) = $(-3)^{2}$ - 7 (-3) + k

        = 9 + 21 + k

        = 30 + k

30 + k = 0

k = - 30