Question

Expand (48)³

Answer 1

(48)³ = (50 – 2)³

Comparing (50 – 2)³ with (a – b)³ we have a = 50 and b = 2

(a – b)³ = a³ – 3a²b + 3ab² – b³

(50 – 2)³ = (50)³ – 3(50)²(2) + 3(50)(2)² – 2³

= 1,25,000 – 15000 + 600 – 8

= 1,10,000 + 592

= 1,10,592