2a2-5a+10+(3a2+7a+15)
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Answered by
1
Answer:
first you follow meeeeeeeeeee
Answered by
2
2a2+3a2-5a+7a+10+15
5a2+2a+25=0
by using formula: -b+-√4a2-c
-------------------
2a
a=5 b=2. c=25
-2+-9
-------
10
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