Question

1. Factorise. (1) x3 + 64y3​

Answer 1

Answer:

3+192y

Step-by-step explanation:

(1×3)+(64×3y)

3+192y

Answer 2

Answer:

We know that,

a³ + b³ = (a + b) (a² – ab + b²)

x3 + 64y3 = (x)3 + (4y)3

Here, a = x and b = 4y

Now, substituting in the above formula, we get

x³ + (4y)3 = (x + 4y) [x² – x(4y) + (4y)²]

= (x + 4y) (x² – 4xy + 16y²)