if x=3 a solution of the equation 3x sqaure+(k-1)x+9=0 then k=?
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put value of 3 in the equation at place of x
3(9)+k-1(3)+9=0
27+3k-3+9=0
33 = -3k
k = -11
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3(9)+k-1(3)+9=0
27+3k-3+9=0
33 = -3k
k = -11
_____________________
if it helped you mark it as a
brainliest answer
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