Use variable, symbol to rewrite the sentence more formally. Are there numbers with the property that the sum of their squares equals the square of their sum? Given any real number, its square is nonnegative. What is the opposite statement of “If it is raining then there are clouds in the sky”.

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Use variable, symbol to rewrite the sentence more formally.

  1. Are there numbers with the property that the sum of their squares equals the square of their sum?
  2. Given any real number, its square is nonnegative.
  3. What is the opposite statement of “If it is raining then there are clouds in the sky”.
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