Math, asked by ky8102005, 10 months ago

(4y-5)³...?..........

Answers

Answered by Anonymous

3

Solution :

→ ( 4y - 5 )³

→ ( 4y )³ - 5³ - 3 × ( 4y )² × 5 + 3 × 4y × 5²

→ 64y³ - 125 - 240y² + 100y

→ 64y³ - 249y² + 100y - 125

Identity Used :

→ ( a - b )³ = a³ - b³ - 3a²b + 3ab²

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