Question

If y = -1 is a zero of the polynomial q(y) = 4y3 + ky2- y – 1, then find the value of k.

Answer 1

Answer:

Given y=-1

p(-1)=4(-1)3+k(-1)2-(-1)-1

-(12)+2-1 =k

12-2-1

9

Answer 2

Step-by-step explanation:

(4*-1*-1*-1) + k-1^2 -(-1)-1

-4 +k +1-1

-k=-4

k=4

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