Question

$x {}^{2} - 15 \: find \: the \: zeroe \: of \: the \: polinomial$
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Answer 1

Step-by-step explanation:

$x {}^{2} - 15 \\ = x {}^{2} - (\sqrt{15} ) {}^{2} \\ = (x + \sqrt{15} )(x - \sqrt{15} ) \\ for \: zeros \: \\ x + \sqrt{15} = 0 \\ x = - \sqrt{15} \\ x = \sqrt{15} \\ are \: zeros \: of \: polynomial$