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asked Aug 15, 2019 197k views

1 Answer

Thiago Barcala · Answer 1 · 2019-08-21T21:41:57+0000

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 =
$\pm √(81)$

x = 9 or x = -9

Thus,

The answer is option B 9

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