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Home > CC4 > Chapter 7 > Lesson 7.1.3 > Problem 7-39

7-39.
  1. Rewrite each of the following expressions in a simpler form. Homework Help ✎

  2. a.

    b.

    c.

    (3x + 4)(4y – 1)

    d.

    (x – 2)2 + 2

Read Math Notes box in Lesson 1.3.1 on scientific notation.

6.6 × 107

Read Math Notes box in Lesson 1.3.2 to review the rules of exponents.

Multiply the all of the exponents in the parentheses by 3. Remember 3 = 31. In the numerator you have
( -31 · 3 · x2 · 3). In the denominator you will have y-2 · 3.

Make sure final answer has no negative exponents.

-27x6y6

Use a generic rectangle.
Read Math Notes box in Lesson 3.2.5 for more help.

Remember (x − 2)² is equivalent to (x − 2)(x − 2).
See part (c) for more help.