# If 4 is a zero of f(x)= 3x^3 + kx -2 find the value of k

If 4 is a zero of $f\left(x\right)=3{x}^{3}+kx-2$ find the value of k
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Jakob Chavez
If 4 is a zero of f(x), then f(4)=0.
$f\left(4\right)=0=3\left(4{\right)}^{3}+4k-2$.
190+4k=0
4k=-190
k=-47.5