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mote1985 [20]
3 years ago
15

The total length of the fence around a quadrilateral-shaped garden shown is 3 a 2+ 15a + 9. What expression represents the missi

ng fence length?
Help me asap!!!

Mathematics
1 answer:
anyanavicka [17]3 years ago
5 0

Answer:

the missing fence length = 2a² + 18

Step-by-step explanation:

3a²+15a+9 = (a²-7) + (10a-2) + 5a + ? = a² + 15a -9

? = (3a²+15a+9) - (a² + 15a -9) = 2a² + 18

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