Find the valu of K. If (x+1) is a factor of P(x) in each of the following.
P(x)=5x^2+kx-4.
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5x^2+kx-4=0
x+1=0
x=-1
5(-1)^2+k(-1)-4=5-k-4=0
k=1
x+1=0
x=-1
5(-1)^2+k(-1)-4=5-k-4=0
k=1
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