Question

if -3 is one of the roots of x^2+3(k+2)x-9=0, then k=....

Answer 1

Answer:

k= -3

Step-by-step explanation:

x²+3(k+2)+x-9=0

9+(-6)= -3(k+2)

3= -3(k+2)

-1 = k+2

-3=k