Question

factorise (2a + 3b)³ - (2a - 3b)³​

Answer 1

Answer:

Step-by-step explanation:

1)(x+y)³=x³+y³+3x²y+3xy²

2)(x-y)³=x³-y³-3x²y+3xy²

(x+y)³-(x-y)³=2y³+6x²y

=2y(y²+3x²)

(2a+3b)³-(2a-3b)³

Here x=2a and y=3b

(2a+3b)³-(2a-3b)³

2(3b)[(3b)²+3(2a)²]

6b(9b²+12a²)

6b(3)(3b²+4a²)

18b(3b²+4a²)

Answer 2

Step-by-step explanation:

I hope it will help you