Find the a2 and an of the A.P if a6=12 and a8=22.
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a6= 12
a8 = 22
a+(n-1) d = 12
a + (6-1) d =12
a+5d =12 ------1
a+(8-1) d = 22
a+7d =22--------2
From 1 and 2
d= 5
Therefore
a+5d =12
a+ 25 = 12
a= -13
a2=a+ 1
=-13+1
= -12
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