Question

 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

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Answer 1

Answer:

Your answer is option (B) - 11

Step-by-step explanation:

Thank you.......

Answer 2

x=3

.°. 3x²+(k+1)x+9=0

.°. 3x²+kx+x+9=0

.°. 3(3)²+k(3)+(3) +9=0

.°. 27+3k+3+9=0

.°. 39+3k=0

.°. 3k =-39

.°. k=-39/3

.°. k=-13

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