Sagot :
Answer:
a. 0 , 12 , 24 , 36 , ...
d = a2- a1 = 12 - 0 = 12
d = a3 - a2 = 24 - 12 = 12
d = a4 - a3 = 36 - 24 = 12
Thus, the common difference(d) is 12
b. -14 , -7 , 0 , ...
d = a2 - a1 = -7 - (-14) = -7 + 14 = 7
d = a3 - a2 = 0 - (-7) = 0 + 7 = 7
Thus, the common difference(d) is 7
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