Digital ACT Math Practice Question #1996
Test your problem-solving accuracy on this official-caliber item. Select an answer choice to check your reasoning instantly.
Row-by-column: 1(4) + -2(1) = 2. Matches only choice [[2], [17]].
Matrix multiplication row by column: Row 1 = (1)(4) + (-2)(1) = 2. Row 2 = (3)(4) + (5)(1) = 17. Result is [[2], [17]]....
Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...
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