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18 May, 00:59

Evaluate 4 (a^2 + 2b) - 2b when a = 2 and b = - 2.

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Answers (2)
  1. 18 May, 01:04
    0
    4

    Step-by-step explanation:

    4 (2^2 + (2 * - 2)) - (2 * - 2)

    2^2 = 4

    4 (4 + (2 * - 2)) - (2 * - 2)

    2 * - 2 = - 4

    4 (4 + - 4) - - 4

    - - 4 = + 4

    +-4 = - 4

    4 (4 - 4) + 4

    4 - 4 = 0

    4 (0) + 4

    4 * 0 = 0

    0 + 4

    0 + 4 = 4

    4
  2. 18 May, 01:11
    0
    4

    Step-by-step explanation:

    4 (4-4) + 4=4

    insert 2 in a and-2 in b
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