Factoring a Sum or Differenceof Two Cubes
Multiply.
2
2
1. 5 5 25
2. 5 5 25
x x x
x x x
Write a rule to factor the sum or difference of two cubes.
Chapter 10Discovery 1
Determining Signs for the Factors of c
Factor the following quadratic trinomials of the form 2 . x bx c21. 5 6 x x
If c is positive and b is positive, then the factors of c are both ____.22. 5 6 x x
If c is positive and b is negative, then the factors of c are both ____.23. 6 x x
If c is negative and b is positive, then the factors of c have different signs. The factor with the largest absolute value is ____.
24. 6 x xIf c is negative and b is negative, then the factors of c have different signs. The factorwith the largest absolute value is ____.
Write a rule to determine when the factors are positive or negative.
Chapter 10Discovery 2