Question

111 cube - 89 cube using identities​

Answer 1

★ Given that,

• ✒ 111³ - 89³ = ?

★ Solution :

➡ 111³ - 89³ = (111 - 89)[(111)² + (111)(89) + (89)² ]

• a³ - b³ = (a - b)(a² + ab + b² )
• a = 111 & b = 89

➡ 22[12321 + 9879 + 7921]

➡ 22[ 30121 ]

➡ 662662

$\boxed{∴ 111³ - 89³ = 662662}$

Step-by-step explanation:

$<marquee behaviour-move><font color="blue"><h2># PLEASE MARK ME AS BRAINLIEST✌✌✌</ ht></marquee>$