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9-80.
  1. Simplify each of the following expressions. Homework Help ✎

    1. 82 + 72

    2. 72 · 7 · 7

    3. pic

    4. (22 + 6)2

    5. −4 · 32 − 2

    6. x x

    7. 3 · 3 ÷ 3

    8. 4x + x − 2x

    9. −2 · 4 ÷ 4

Use the Order of Operations.

64 + 49

113

How can you combine these?

74 = 2401

Use the same method as part (a).

(4 + 6)2

(10)2

100

Use the Order of Operations.

What do you get when you subtract any number from itself?

0

Start from the left and work your way to the right.

3

Combine like terms.

3x

See part (g).