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15 March, 01:10

Evaluate 5x2-9 when x=-2

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  1. 15 March, 01:19
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    answer: 11

    explanation: just plug in - 2 for x. the new problem becomes 5 (-2) ^2 - 9. Negative two squared is 4. 5 times 4 is 20. 20 minus 9 is 11.
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