Question

f 3 is a zero of the polynomial 2x 2 + x + k, find the value of k.​

Answer 1

Answer:

this is the answer for this question

Step-by-step explanation:

4+3+k=0

k+7=0

k=-7

Answer 2

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$f(x) = 2 {x}^{2} + x + k$

$f(3) \implies2 {(3)}^{2} + 3 + k = 0$

$18 + 3 + k = 0$

$k = - 21$