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Factoring Trinomials: a = 1 (Continued)

Question 4 • Common Core Algebra I B-IC

Drag tiles onto the board to represent each factor. What is the factorization? x2 + x – 12 =[___]

Answer
A
(x + 3)(x + 4)
B
(x + 3)(x – 4)
C
(x – 3)(x – 4)
D
(x – 3)(x + 4)

Explanation

To factor x² + x − 12, find two numbers whose product is −12 and whose sum is 1. Those numbers are 4 and −3, so the factorization is (x + 4)(x − 3), which is choice D.

AI-written and checked against the verified answer.

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