Question

a + b = 10, ab = 24 ∴ a³ + b³ = ______.

विकल्प

• 280

• 270

• 1720

• 520

Answer 1

a + b = 10, ab = 24 ∴ a³ + b³ = 280.

Explanation:

a³ + b³ = (a + b)³ − 3ab(a + b)

= 1000 − 3(24) (10)

= 1000 − 720

= 280