Q. Factor as the product of two binomials.x2−x−42=
Identify Quadratic Expression: Identify the quadratic expression to be factored.The given quadratic expression is x2−x−42.
Determine Factors: Determine the factors of the constant term that add up to the coefficient of the x term.The constant term is −42, and the coefficient of the x term is −1. We need to find two numbers that multiply to −42 and add up to −1.
List Factor Pairs: List the pairs of factors of −42. The pairs of factors of −42 are (1,−42), (−1,42), (2,−21), (−2,21), (3,−14), (−3,14), (6,−7), (−6,7).
Find Correct Pair: Find the correct pair of factors that add up to −1. By checking the pairs, we find that 6 and −7 add up to −1.
Write as Binomials: Write the quadratic expression as the product of two binomials using the found factors.The quadratic expression x2−x−42 can be factored as (x−7)(x+6).