4. If x = 3 is a solution of the equation 3x² + (k-1)x+ 9 = 0 then k = ?
(a) 11
(b) -11
(c) 13
(d) -13
Answers
Answered by
2
Answer:
-11
Step-by-step explanation:
3(3*3)+(k-1)*3+9=0
27+3k-3+9=0
33+3k=0
k=-33/3=-11
I think it is right answer If you like please mark as brainliest
Answered by
5
Answer:
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