if 3 is solution of 3x²+(k-1)x+9=0 then find k
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2
Answer:
x=3[ given]
then putting equation
3x²+(k-1) x+9
3(3) ²+(k-1) 3+9=0
3×9+3k-3+9=0
27+3k+6 =0
33+3k=0
3(11+k) =0
11+k=0
k =-11
Answered by
2
Answer:
k = -11
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