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  • Number Theory (SAT)
  • If a and b are negative integers, which of the following ...
Multiple choice

If a and b are negative integers, which of the following is the greatest?

  1. ab

    • a3b
  2. a2 - b2

  3. a2 + b2

  4. a3 + b3

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let (a, b) be (-1, -2). Then (1) = 2, (2) = - 2, (3) = - 3, (4) = 5 and (5) = - 7. So (4) is greatest among all the choices, is the answer.

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