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Evaluate the expression for q=−1q = -1.\newline−19q=-19q = _____

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Q. Evaluate the expression for q=−1q = -1.\newline−19q=-19q = _____
  1. Substitute qq with –1–1: Substitute qq with –1–1 in the expression –19q–19q.\newlineSubstitute –1–1 for qq in –19q–19q to get –19(–1)–19(–1).
  2. Evaluate –19(–1)–19(–1): Evaluate –19(–1)–19(–1).\newlineMultiplying a negative number by a negative number gives a positive result, so –19–19 times –1–1 equals 1919.\newline–19(–1)=19–19(–1) = 19

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