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Verified answer
S1 = 2.1²-6.1= 2-6
= - 4 jadi bilangan pertama - 4
S2 = 2.2²-6.2
=8-12
= - 4 jumlah bilangan kedua dengan pertama - 4
Jadi,
Misal x = bilangan kedua
-4 = - 4 + x
-4 + 4 = x
0=x
Jadi bil. 2 = 0
Jadi bedanya 4