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8-48.

Rewrite each expression in scientific notation.

Read the Math Notes boxes in Lesson 1.3.1 on scientific notation and Lesson 1.3.2 on laws of exponents.

  1. Convert to . With common scientific notations you can add the numbers.

  1. Write  as a decimal .

    Simplify  using laws of exponents.

    So results. Now rewrite in standard form and convert back to scientific notation.

  1. Use the Commutative Property of Multiplication to reorder the terms, so multiply .