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28-03-2018
Mathematics

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garydesir1 garydesir1

28-03-2018

Hi again!

You need to do the same steps I used for the other one.

x² < 81

Find the critical points of the inequality

x² = 81

Then take square root

x = [tex]\pm \sqrt{81} [/tex]

x = 9 or x = -9

Thus,

The answer is option B 9

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