Q2)Factorise:64a³–27b³–144a²b+108ab²
Answers
Answered by
3
Step-by-step explanation:
64a³ - 27b³ - 144a²b + 108ab²
Here, using the identity -
(a - b)³ = a³ - b³ - 3a²b + 3ab²
⇒ 64a³ - 27b³ - 144a²b + 108ab²
= (4a)³ - (3b)³ - 3(4a)²*(3b) + 3(4a)*(3b)²
⇒ (4a - 3b)³
⇒ (4a - 3b)*(4a - 3b)*(4a - 3b)
Similar questions