Question

QUIZ #112
Materi: Operasi Hitung

Jika diketahui :
a = 5
b = c = 3
d = 4
Tentukan hasil dari a² + b × c + d² !​​​​

Answer 1

Diket =

• a = 5
• b = c = 3
• d = 4

Maka

• a² + b × c + d²
• 5² + (3 × 3) + 4²
• (25 + 9) + 16
• 34 + 16
• 50

smg benar

Answer 2

Jawab:
= 50

Penjelasan:
∵ b = c ∴
a² + (b × c) + d²
= a² + b² + d²
= (a+b+d)² - 2(a(b+d) + bd)

∵ a = 5, b = 3, d = 4 ∴
(a+b+d)² - 2(a(b+d) + bd)
= (5+3+4)² - 2(5(3+4) + 3(4))
= (8+4)² - 2(5(7) + 3(4))
= 12² - 2(35+12)
= 144 - 2(47)
= 144 - 94
= 50

(xcvi)