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Home > A2C > Chapter 13 > Lesson 13.1.4 > Problem 13-75

13-75.
  1. Multiply the expressions in parts (a) through (d). Homework Help ✎

    1. (a + b)(a2ab + b2)

    2. (x − 2)(x2 + 2x + 4)

    3. (y + 5)(y2 − 5y + 25)

    4. (x − y)(x2 + xy + y2)

    5. What did you notice about these products?

    6. Make up another multiplication problem that will follow the same pattern.

a3 + b3

See parts (a) and (b).

x3 − 8

See parts (a) and (b).

What did they all have in common?

Substitute values into the expression in either part (a) or part (d).