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Home > INT3 > Chapter 8 > Lesson 8.3.4 > Problem 8-144

8-144.
  1. Shinna wants to factor 9x2y4z6. “Wait!” she says. “I think I can see a way to use the difference of squares factoring pattern!” Homework Help ✎

    1. Is Shinna’s expression a difference of squares? If so, what are the “squares”? If not, explain why.

    2. Help Shinna factor the expression 9x2y4z6.

Yes; it is the difference of the square (3xy2)2 and the square (z3)2.

Remember that one factor contains addition and the other subtraction.