Factoring Intuition Math Example 4

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Example 4

hard
Find two numbers that multiply to βˆ’24-24 and add to βˆ’2-2.

Solution

  1. 1
    Factor pairs of 24: (1,24),(2,12),(3,8),(4,6)(1,24),(2,12),(3,8),(4,6).
  2. 2
    Need opposite signs with sum βˆ’2-2: try 44 and βˆ’6-6: 4Γ—(βˆ’6)=βˆ’244 \times (-6) = -24, 4+(βˆ’6)=βˆ’24+(-6) = -2 βœ“

Answer

4Β andΒ βˆ’64 \text{ and } -6
When both the product is negative and the sum is negative, the number with larger absolute value must be the negative one.

About Factoring Intuition

Understanding factoring as finding what multiplies together to give an expression.

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