Question

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

Answer 1

Answer:

k = 4

Step-by-step explanation:

Since y = -1 us a zero of the polynomial, so q(-1) must be equal to zero

q(-1) = 0

=> 4(-1)^3 + k(-1)^2 - (-1) -1 = 0

=> -4 + k + 1 -1 = 0

=> k - 4 = 0

=> k = 4

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Answer 2

please mark as brainliest answer