brainlyhasil penjumlahan dari 8 sigma k =3 (k²— 4 x + 4) + 8 sigma k=6 ( k - 2)²

jawab
8..............8
∑(k-2)² + ∑ (k-2)²
k=3........k=6

= (3-2)²+(4-2)²+(5-2)²+2 {(6-2)²+(7-2)²+(8-2)²}
= 1 + 4+ 9+ 2 (16 + 25+ 36)
= 14 + 2(77)
= 168