Question

soal matematika kls 8 tolong ya ........ yg a,b,dan c pakai cara

Answer 1

Verified answer

A. Un= a+(n-1)b
= 7+(n-1)2
b = u2-u1 = 9-7=2
B. Un= a+(n-1)b
= 5+(n-1)9
b = u2-u1 = 14-5=9
C. Un= a+(n-1)b
= -19+(n-1)7
b = u2-u1 = -12- (-19)
= -12+19 =7