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https://brainly.com/question/15912533?answeringSource=feedPersonal%2FhomePage%2F18

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Answer:  

Last one: 5x - 3√y + 1

Step-by-step explanation:

8x + √1 - √9y - √9x^2

8x + 1 - 3√y - 3x

5x + 1 - 3√y

5x - 3√y + 1

 

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