Find the value of k if(x+1) is a factor of the polynomial kx 3 -9x 2 +x+6k
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f(x)=kx³-9x²+x+6k
q(x)=x+1
Factor means when dividing leaves the remainder 0
x=-1
putting into f(x)
k(-1)³-9(-1)²+(-1)+6k=0
-k-9-1+6k
5k=10
k=2
q(x)=x+1
Factor means when dividing leaves the remainder 0
x=-1
putting into f(x)
k(-1)³-9(-1)²+(-1)+6k=0
-k-9-1+6k
5k=10
k=2
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