Question

(-x+3y +2
$( - x + 3y + 2z) {}^{2}$
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Answer 1

Step-by-step explanation:

$( - x + 3y + 2z) {}^{2} \\ = ( { - x})^{2} + ( {3y})^{2} + ( {2z})^{2} - 2.x.3y + 2.3y.2z - 2.2z.x \\ = {x}^{2} + 9 {y}^{2} + 4 {z}^{2} - 6xy + 12yz - 4zx$