Question

if -3 is the zero of p(x)=3xsquare +kx×6. find the value of k!
$p(x) = 3x {}^{2} + kx + 6$
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Answer 1

Answer:

If -3 is a zero of polynomial p(x) ;

p(-3) =$3 (-3){}^{2} + k(-3)+ 6$

-3 = $27 - 3k + 6$

- 3 = 33 - 3k

3k = 33 + 3

3k = 36

k = 36 / 3

k = 12

k = 12

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