For those who don't know part 4 (Determinants)

Algebra Level 2

32y3y2021y \large \left| \begin{matrix} 3 & 2 & y \\ 3 & y-2 & 0 \\ 2 & 1 & y \end{matrix} \right|

Find the value of yy other than 5 such that the determinant above is equal to 0.

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