Question

if x-3 is a factor of x^2+kx+9 find the valueofk

Answer 1

Hi.
The Best answer for your question is.
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Solution:-
When p(x) is divided by x-3,the remainder will be p(3).
Therefore,
p(3)=0
=>3^2+k×3+9=0
=>18+k×3=0
=>k×3= -18
=>k= - 18/3
Therefore,k= -6
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