Expand using the identity — task. Assessments, Math CBSE.

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{(x + 3 y + 9 z)}^{2}

\(=\) __________

$x^{2} + 17 y^{2} + 226 z^{2} + 18 x y + 75 y z + 369 x z$
$x^{2} + 9 y^{2} + 81 z^{2} + 6 x y + 54 y z + 18 x z$
$x^{2} - 17 y^{2} - 81 z^{2} - 18 x y + 54 y z + 369 x z$
$x^{2} - 9 y^{2} - 226 z^{2} + 6 x y + 54 y z + 18 x z$

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