Question
Solve for $x$$$\left|\begin{array}{cc}2 x & -3 \\-2 & 2 x\end{array}\right|=3$$
Step 1
The determinant of a 2x2 matrix is calculated as follows: $$\left|\begin{array}{cc} a & b \\ c & d \end{array}\right|=ad-bc$$ Show more…
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