10 suku pertama dari 1) Un=3n+2n-n 2) Un = n2+3n-2

10 suku pertama dari
1) Un=3n+2n-n
2) Un = n2+3n-2

Jawab: 1).4,8,12,16,20,24,28,32,36,40

2)6,8,13,18,23,28,33,38,43,48

Penjelasan dengan langkah-langkah

1).U1=3(1)+2(1)-1 U6=3(6)+2(6)-6

=3+2-1 =18+12-6

=5-1 =30-6

=4 =24

U2=3(2)+2(2)-2 U7=3(7)+2(7)-7

=6+4-2 =21+14-7

=10-2 =35-7

=8 =28

U3=3(3)+2(3)-3 U8=3(8)+2(8)-8

=9+6-3 =24+16-8

=15-3 =40-8

= 12 =32

U4=3(4)+2(4)-4 U9=3(9)+2(9)-9

=12+8-4 =27+18-9

=20-4 =45-9

=16 =36

U5=3(5)+2(5)-5 U10=3(10)+2(10)-10

=15+10-5 =30+20-10

=25-5 =50-10

=20 =40

2).U1=(1)2+3(1)-2 U6=(6)2+3(6)-2

=2+6-2 =12+18-2

=8-2 =30-2

=6 =28

U2=(2)2+3(2)-2 U7=(7)2+3(7)-2

=4+6-2 =14+21-2

=10-2 =35-2

=8 =33

U3=(3)2+3(3)-2 U8=(8)2+3(8)-2

=6+9-2 =16+24-2

=15-2 =40-2

=13 =38

U4=(4)2+3(4)-2 U9=(9)2+3(9)-2

=8+12-2 =18+27-2

=20-2 =45-2

=18 =43

U5=(5)2+3(5)-2 U10=(10)2+3(10)-2

=10+15-2 =20+30-2

=25-2 =50-2

=23 =48

MAAF YA KALO SALAH 🙂