Sn=5n2-7n= u3-u5+u7=...?
Matematika
Fitrahhidayat6069
Pertanyaan
Sn=5n2-7n= u3-u5+u7=...?
1 Jawaban
-
1. Jawaban rafa123456
s1=U1
s1=-2
u1=10n-12
maka u3=18 u5=38 u7=58
maka u3-u5+u7= 18-38+58=38