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The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. Three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. What is the length of the fourth side of the fence?

User Gugu
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Answer:

Hope the picture will help you

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. Three sides of-example-1
User TechnoCorner
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