a1=a-b, a2 =b-a find d
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0
Answer:
dry tex
Step-by-step explanation:
Stuttgart tdfurt for yyd it
Answered by
1
Answer:
d
=common difference
= 2nd term - 1st term
= a2 - a1
= ( b-a ) - ( a-b)
= b-a-a+b
= 2b
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