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1-9.

Simplify each expression. Homework Help ✎

  • Because both numbers are negative, you can add them. Don't forget to make the answer negative.

  • −59

  • Subtracting a negative is the same as adding a positive. This is the same problem as 8 + 9.

  • Multiply the numbers. Because there is only one negative number, the final answer will be negative.

  • −72

  • The rules for dividing negative numbers are the same as the rules for multiplying them.

  • Multiplying two negative numbers gives a positive number.

  • −2(−3) = 6 So −2(−3)(−4) = 6(−4)

  • Multiplying a positive and a negative makes a negative.

  • 6(−4) = −24

  • −24

  • Subtracting is the same as adding a negative number. Refer to part (a).

  • Because the exponent is outside the parentheses, think of this as (−5)(−5).

  • 25

  • Think of this as −(5²) which is −(5)(5).

  • What positive number multiplied by itself is 49?

  • 7