Digital ACT Math Practice Question #1616
Test your problem-solving accuracy on this official-caliber item. Select an answer choice to check your reasoning instantly.
det = ad - bc. Watch the negative: 10 - (-12) = 10 + 12 = 22.
For a 2x2 matrix \(\begin{pmatrix} a & b \\ c & d \end{pmatrix}\), the determinant is \(ad - bc\). Here, \(a=5, b=-3, c=4, d=2\). Determinant = \(5(2) - (-3)(4) = 10 - (-12) = 10 + 12 = 22\)....
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