volume_mute

Evaluate the following expression

publish date: 2022/08/22 02:01:00 GMT+10

volume_mute

for a = -2 and b = 5

-a + 2ab =

Please drag and drop the selected option in the right place or type it instead
18
20
-21
-18

Correct Answer

(1) -18

Explanation

  1. Substitute for a and b
    • -a + 2ab = -(-2) + 2(-2)(5)
  2. Evaluate each expression separately
    • 2 - 20
  3. Do the subtraction
    • -18

Reference

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