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Evaluate 5x2−9 when x=−2
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Evaluate 5x2−9 when x=−2

User Aminalid
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2 votes

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.

User DL Narasimhan
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