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14 September, 16:08

What is the value of the expression 2x2+3xy-4y2when x=2 and y=4

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Answers (2)
  1. 14 September, 16:13
    0
    The answer is 32 ...
  2. 14 September, 16:17
    0
    I got - 4 as the answer.
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