fencing is required around a rectangular park (8a-6a²+9)units and breadth (-10a-8+8a²)units hiw much fence will be required?
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perimetar of rectangle 2(l+b)
2(8a -6a² +9 -10a -8+8a²)
2(-2a-2a²+1)
-4a -4a²+2
2(8a -6a² +9 -10a -8+8a²)
2(-2a-2a²+1)
-4a -4a²+2
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