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16 January, 22:42

Evaluate 2b2 - 3b + 4a2 for a = - 6 & b=8 A. - 40 B. 202 C. 248 D. 346

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  1. 17 January, 00:22
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    2b^2 - 3b + 4a^2 ... a = - 6, b = 8

    2 (8^2) - 3 (8) + 4 (-6^2) =

    2 (64) - 24 + 4 (36) =

    128 - 24 + 144 =

    248 <==
  2. 17 January, 00:25
    0
    2b ² - 3b + 4a ² =

    2 * (8) ² - 3*8 + 4 * (-6) ² =

    2 * 64 - 24 + 4*36 =

    128 - 24 + 144 = 248
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