Can somebody help me ? I don't understand the circle part Or maybe the other wa

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secondary 4 | A Maths
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secondary 4 A Maths

Can somebody help me ?
I don't understand the circle part
Or maybe the other way to solve this question?

Date Posted: 6 years ago

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Date Posted: 6 years ago

Milky06

6 years ago

Thank you very much !!

Milky06

6 years ago

Thank you very much!