jawab:
A. Lima suku pertama berturut-turut yaitu: 2,12,36,80,150
B. Lima suku pertama berturut-turut yaitu: 2,6,12,20,30
penjelasan:
A. n²(n+1)
= 1²(1+1)=1(2)=2
=2²(2+1)=4(3)=12
=3²(3+1)=9(4)=36
=4²(4+1)=16(5)=80
=5²(5+1)=25(6)=150
B. n(n+1)
=1(1+1)=1(2)=2
=2(2+1)=2(3)=6
=3(3+1)=3(4)=12
=4(4+1)=4(5)=20
=5(5+1)=5(6)=30
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jawab:
A. Lima suku pertama berturut-turut yaitu: 2,12,36,80,150
B. Lima suku pertama berturut-turut yaitu: 2,6,12,20,30
penjelasan:
A. n²(n+1)
= 1²(1+1)=1(2)=2
=2²(2+1)=4(3)=12
=3²(3+1)=9(4)=36
=4²(4+1)=16(5)=80
=5²(5+1)=25(6)=150
B. n(n+1)
=1(1+1)=1(2)=2
=2(2+1)=2(3)=6
=3(3+1)=3(4)=12
=4(4+1)=4(5)=20
=5(5+1)=5(6)=30