Question 5 • Common Core Algebra I B-IC
Factor the quadratic by finding two numbers whose product is 10 and whose sum is 7: 5 and 2. Thus a² + 7a + 10 = (a + 5)(a + 2). Since (a + 5) is already one factor, the other factor is (a + 2), choice A.
AI-written and checked against the verified answer.