Find the determinant of \\begin{bmatrix} 1 &2 \\\\ 3&4 \\end{bmatrix}
", "advice": "Write the correct solution here
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\n\n\n\\begin{bmatrix}\\var{a} & \\var{b}\\\\ \\var{c} & \\var{d} \\end{bmatrix}
", "advice": "The correct solution is {a} x {d} - {b} x {c}
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\n\n$\\begin{bmatrix} 1 & 2\\\\ 3&4\\end{bmatrix} \\begin{bmatrix}5 &1&0\\\\ 6 &1 &4\\end{bmatrix}$
", "advice": "Written solution
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