Question

QUIZ #113
Materi: Operasi Hitung

Jika diketahui :
a = 9
b = 7
c = d = 4
Tentukan hasil dari a² + 7b + 2c + d² !​​​​​

Answer 1

Diketahui

• a = 9
• b = 7
• c = d = 4

Ditanya

• a² + 7b + 2c + d²

Maka

• 9² + 7(7) + 2(4) + 4²
• (81 + 49) + 8 + 16
• (130 + 8) + 16
• 138 + 16
• 154

Answer 2

Jawab:
= 154

Penjelasan:
∵ c = d ∴
a² + 7b + 2c + c²
= a² + 7b + c(2+c)

Jika a = 9, b = 7, c = 4
a² + 7b + c(2+c)
= 9² + 7² + 4(2+4)
= 81 + 49 + 4(6)
= 81 + 49 + 24
= 154

(xcvi)