Question

If one of the roots of the quadratic equation x²+ 3x + k=0 is 3, then find the other root.
-18
18
-6
6.

please answer fast​

Answer 1

-18

Step-by-step explanation:

Here one of the root is 3 (i.e X=3)

(3)²+3(3)+k =0

9+9+k=0

18+k=0

18=0-k

18=-k

Therefore -18=k