CPM Homework Banner
5-66.

Factor each expression completely. Homework Help ✎

  1. x2 − 49

  2. 6x2 + 48x

  3. x2x − 72

  4. 2x3 − 8x

Notice that this is the difference of squares.

There are only 2 terms, so factor out the greatest common factor.

Find two numbers that multiply to −72 and add to −1.

Factor out the greatest common factor first, then see part (a).

2x(x + 2)(x − 2)