Question:medium

Let $x$, $y$, and $z$ be real numbers satisfying
\(4(x^2 + y^2 + z^2) = a,\)
\(4(x - y - z) = 3 + a.\)
Then $a$ equals ?

Updated On: Nov 24, 2025

3
4
1
$1\frac{1}{3}$

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