Question

What is Factor Theorem?

Answer

$\mathrm{Factor\; Theorem}$
$\mathrm{Let\; }f\left(x\right)\mathrm{ \; be\; a\; polynomial.}$
$\mathrm{Then\; }\left(x-h\right)\mathrm{ \; is\; a\; factor\; of\; }f\left(x\right)\mathrm{ \; if\; and\; only\; if\; }f\left(h\right)=0$