Question

if -4 is a zero of the polynomial x2-x-(2k+2) find k
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Answer 1

Step-by-step explanation:

x=-4

x^2-x-(2k+2)=0

(-4)^2-(-4)-(2k+2)=0

16+4-(2k+2)=0

20-(2k+2)=9

-(2k+2)=9-20

-2k-2=-11

-2k=-11+2

-2k=-9

-k=-9/2

-k=-4.5

k=4.5

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Answer 2

Answer:

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