Jika (3x- 2y)² = ax³ + bx²y + cxy² + dy²
maka a + b + c + d =
Jawaban Terkonfirmasi
↔ ( 3x – 2y )³
↔ (3x)³(-2y)⁰ + 3(3x)²(-2y)¹ + 3(3x)¹(-2y)² + (3x)⁰(-2y)³
↔ 27x³ – 54x²y + 36xy² – 8y³
a = 27
b = -54
c = 36
d = -8
↔ a + b + c + d
↔ 27 – 54 + 36 – 8
→ 1