Hello, cam_ddrt!

We have: .1. Find the intervals on which is positive.

The function is zero or undefined at

These are the only values where changes signs.

These three values divide the number line into four intervals.

. .

Test a value in each interval.

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. .

. .

We have:

. .

Therefore, is positive on: .

We have: .2. Find all for which is zero.

Simplify: .

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