if (x+1) is a factor of the polynomial (2x square+kx) then k=?
Answers
Answered by
1
Answer:
k=2
Step-by-step explanation:
x+1=0
x=-1
2x square + kx
2x square + kx=0
2(-1) Square +k*-1=0
2-k=0
2=k
Answered by
1
Step-by-step explanation:
f(x)=2x²+kx=0
x+1=0
x=(-1)
f(-1)=2(-1)²+k(-1)=0
=2(1)-k=0
=2-k=0
-k=-2
minus minus cancel
k=2
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