Question

please provide solution​

Answer 1

Answer:

since 3 is a solution of the given equation

3(3)² + (k-1)3 + 9= 0

3(9) + 3k-3 + 9 = 0

27 + 6 +3k = 0

33 = -3K

k = -11

Hope this helps ☺️

Answer 2

$3(3 \times 3) + (k + 1)3 + 9 = 0\\ 27 + 3k - 3 + 9 = 0 \\ 33 + 3k = 0 \\ k = - 33 \div 3 = - 11$

I HOPE YOU UNDERSTAND....