Question

factorise 343a3-512b3​

Answer 1

hope it helps you mate......

Answer 2

Answer:

We know that,

a³ – b³ = (a – b) (a² + b² + ab)

343a3 – 512b3 = (7a)³ – (8b)³

Here, a = 7a and b = 8b

Now, substituting in the above formula, we get

(7a)³ – (8b)³ = (7a – 8b) [(7a)² + (7a)(8b) + (8b)²]

= (7a – 8b) (49a² + 56ab + 64b²)