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15 September, 12:50

Evaluate a² + ab - b² + 5 when a = 2 and b = 3. is the answer A. 0 B. 1 C. 6 D. 11

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  1. 15 September, 15:28
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    (2) ^2 + (2*3) - (3) ^2 + 5=?

    4+6-9+5=6

    The answer is C. 6
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