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Evaluate the expression for x=9x = 9.\newline−2x=-2x = _____

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Full solution

Q. Evaluate the expression for x=9x = 9.\newline−2x=-2x = _____
  1. Substitute xx value: Substitute the value of xx into the expression.\newlineSubstitute 99 for xx in –2x–2x to get –2(9)–2(9).
  2. Multiply by 99: Multiply –2–2 by 99.–2×9=–18–2 \times 9 = –18

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