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27-03-2020
Mathematics

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evaluate 5x^2-9 when x=2

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27-03-2020

Answer:

5x² - 9 = 11 when x = 2

Step-by-step explanation:

When x = 2, we replace x with 2 in the given expression

5(2)² - 9

5(4) - 9

20 - 9 = 11

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