if x-3 is a factor of x square +kx +9 then find the value of k
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X-3 is a factor
P(x) = x2 + kx +9 =0
P(3) = (3)2 + 3k = - 9
= 9 + 3k = - 9
=3k = - 18
=k = - 6
___________________________
X-3 is a factor
P(x) = x2 + kx +9 =0
P(3) = (3)2 + 3k = - 9
= 9 + 3k = - 9
=3k = - 18
=k = - 6
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